Rivoreo Source Code Repositories
src.rivoreo.one / emulators / simh / ce84886bfa273aedfe35dcd72713067de18f9783 / . / PDP10 / pdp10_rp.c
blob: bfe5b41e39879123fe9eb1ed8b934cc6165f0763 [file] [log] [blame] [raw]
/* pdp10_rp.c - RH11/RP04/05/06/07 RM02/03/05/80 "Massbus" disk controller
Copyright (c) 1993-2008, Robert M Supnik
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Robert M Supnik shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Robert M Supnik.
rp RH/RP/RM moving head disks
12-Nov-05 RMS Fixed DCLR not to clear drive address
07-Jul-05 RMS Removed extraneous externs
18-Mar-05 RMS Added attached test to detach routine
20-Sep-04 RMS Fixed bugs in replicated state, RP vs RM accuracy
04-Jan-04 RMS Changed sim_fsize calling sequence
23-Jul-03 RMS Fixed bug in read header stub
25-Apr-03 RMS Revised for extended file support
21-Nov-02 RMS Fixed bug in bootstrap (reported by Michael Thompson)
29-Sep-02 RMS Added variable vector support
New data structures
30-Nov-01 RMS Added read only unit, extended SET/SHOW support support
24-Nov-01 RMS Changed RPER, RPDS, FNC, FLG to arrays
23-Oct-01 RMS Fixed bug in error interrupts
New IO page address constants
05-Oct-01 RMS Rewrote interrupt handling from schematics
02-Oct-01 RMS Revised CS1 write code
30-Sep-01 RMS Moved CS1<5:0> into drives
28-Sep-01 RMS Fixed interrupt handling for SC/ATA
23-Aug-01 RMS Added read/write header stubs for ITS
(found by Mirian Crzig Lennox)
13-Jul-01 RMS Changed fread call to fxread (found by Peter Schorn)
14-May-01 RMS Added check for unattached drive
The "Massbus style" disks consisted of several different large
capacity drives interfaced through a reasonably common (but not
100% compatible) family of interfaces into the KS10 Unibus via
the RH11 disk controller.
WARNING: The interupt logic of the RH11/RH70 is unusual and must be
simulated with great precision. The RH11 has an internal interrupt
request flop, CSTB INTR, which is controlled as follows:
- Writing IE and DONE simultaneously sets CSTB INTR
- Controller clear, INIT, and interrupt acknowledge clear CSTB INTR
(and also clear IE)
- A transition of DONE from 0 to 1 sets CSTB from INTR
The output of INTR is OR'd with the AND of RPCS1<SC,DONE,IE> to
create the interrupt request signal. Thus,
- The DONE interrupt is edge sensitive, but the SC interrupt is
level sensitive.
- The DONE interrupt, once set, is not disabled if IE is cleared,
but the SC interrupt is.
*/
#include "pdp10_defs.h"
#include <math.h>
#include <assert.h>
#define RP_NUMDR 8 /* #drives */
#define RP_NUMWD 128 /* 36b words/sector */
#define RP_MAXFR 32768 /* max transfer */
#define SPINUP_DLY (1000*1000) /* Spinup delay, usec */
#define GET_SECTOR(x,d) ((int) fmod (sim_gtime() / ((double) (x)), \
((double) drv_tab[d].sect)))
#define MBA_RP_CTRL 0 /* RP drive */
#define MBA_RM_CTRL 1 /* RM drive */
/* Flags in the unit flags word */
#define UNIT_V_WLK (UNIT_V_UF + 0) /* write locked */
#define UNIT_V_DTYPE (UNIT_V_UF + 1) /* disk type */
#define UNIT_M_DTYPE 7
#define UNIT_V_AUTO (UNIT_V_UF + 4) /* autosize */
#define UNIT_V_UTS (UNIT_V_UF + 5) /* Up to speed */
#define UNIT_UTS (1u << UNIT_V_UTS)
#define UNIT_V_DUMMY (UNIT_V_UF + 6) /* dummy flag */
#define UNIT_WLK (1 << UNIT_V_WLK)
#define UNIT_DTYPE (UNIT_M_DTYPE << UNIT_V_DTYPE)
#define UNIT_AUTO (1 << UNIT_V_AUTO)
#define UNIT_DUMMY (1 << UNIT_V_DUMMY)
#define GET_DTYPE(x) (((x) >> UNIT_V_DTYPE) & UNIT_M_DTYPE)
#define UNIT_WPRT (UNIT_WLK | UNIT_RO) /* write protect */
/* Parameters in the unit descriptor */
#define CYL u3 /* current cylinder */
#define FUNC u4 /* function */
/* RPCS1 - 176700 - control/status 1 */
#define CS1_GO CSR_GO /* go */
#define CS1_V_FNC 1 /* function pos */
#define CS1_M_FNC 037 /* function mask */
#define CS1_FNC (CS1_M_FNC << CS1_V_FNC)
#define FNC_NOP 000 /* no operation */
#define FNC_UNLOAD 001 /* unload */
#define FNC_SEEK 002 /* seek */
#define FNC_RECAL 003 /* recalibrate */
#define FNC_DCLR 004 /* drive clear */
#define FNC_RELEASE 005 /* port release */
#define FNC_OFFSET 006 /* offset */
#define FNC_RETURN 007 /* return to center */
#define FNC_PRESET 010 /* read-in preset */
#define FNC_PACK 011 /* pack acknowledge */
#define FNC_SEARCH 014 /* search */
#define FNC_XFER 024 /* >=? data xfr */
#define FNC_WCHK 024 /* write check */
#define FNC_WRITE 030 /* write */
#define FNC_WRITEH 031 /* write w/ headers */
#define FNC_READ 034 /* read */
#define FNC_READH 035 /* read w/ headers */
#define CS1_IE CSR_IE /* int enable */
#define CS1_DONE CSR_DONE /* ready */
#define CS1_V_UAE 8 /* Unibus addr ext */
#define CS1_M_UAE 03
#define CS1_UAE (CS1_M_UAE << CS1_V_UAE)
#define CS1_DVA 0004000 /* drive avail NI */
#define CS1_MCPE 0020000 /* Mbus par err NI */
#define CS1_TRE 0040000 /* transfer err */
#define CS1_SC 0100000 /* special cond */
#define CS1_MBZ 0012000
#define CS1_DRV (CS1_FNC | CS1_GO)
#define GET_FNC(x) (((x) >> CS1_V_FNC) & CS1_M_FNC)
#define GET_UAE(x) (((x) & CS1_UAE) << (16 - CS1_V_UAE))
/* RPWC - 176702 - word count */
/* RPBA - 176704 - base address */
#define BA_MBZ 0000001 /* must be zero */
/* RPDA - 176706 - sector/track */
#define DA_V_SC 0 /* sector pos */
#define DA_M_SC 077 /* sector mask */
#define DA_V_SF 8 /* track pos */
#define DA_M_SF 077 /* track mask */
#define DA_MBZ 0140300
#define GET_SC(x) (((x) >> DA_V_SC) & DA_M_SC)
#define GET_SF(x) (((x) >> DA_V_SF) & DA_M_SF)
/* RPCS2 - 176710 - control/status 2 */
#define CS2_V_UNIT 0 /* unit pos */
#define CS2_M_UNIT 07 /* unit mask */
#define CS2_UNIT (CS2_M_UNIT << CS2_V_UNIT)
#define CS2_UAI 0000010 /* addr inhibit */
#define CS2_PAT 0000020 /* parity test NI */
#define CS2_CLR 0000040 /* controller clear */
#define CS2_IR 0000100 /* input ready */
#define CS2_OR 0000200 /* output ready */
#define CS2_MDPE 0000400 /* Mbus par err NI */
#define CS2_MXF 0001000 /* missed xfer NI */
#define CS2_PGE 0002000 /* program err */
#define CS2_NEM 0004000 /* nx mem err */
#define CS2_NED 0010000 /* nx drive err */
#define CS2_PE 0020000 /* parity err NI */
#define CS2_WCE 0040000 /* write check err */
#define CS2_DLT 0100000 /* data late NI */
#define CS2_MBZ (CS2_CLR)
#define CS2_RW (CS2_UNIT | CS2_UAI | CS2_PAT | CS2_MXF | CS2_PE)
#define CS2_ERR (CS2_MDPE | CS2_MXF | CS2_PGE | CS2_NEM | \
CS2_NED | CS2_PE | CS2_WCE | CS2_DLT )
#define GET_UNIT(x) (((x) >> CS2_V_UNIT) & CS2_M_UNIT)
/* RPDS - 176712 - drive status */
#define DS_OF 0000001 /* offset mode */
#define DS_VV 0000100 /* volume valid */
#define DS_RDY 0000200 /* drive ready */
#define DS_DPR 0000400 /* drive present */
#define DS_PGM 0001000 /* programable NI */
#define DS_LST 0002000 /* last sector */
#define DS_WRL 0004000 /* write locked */
#define DS_MOL 0010000 /* medium online */
#define DS_PIP 0020000 /* pos in progress */
#define DS_ERR 0040000 /* error */
#define DS_ATA 0100000 /* attention active */
#define DS_MBZ 0000076
/* RPER1 - 176714 - error status 1 */
#define ER1_ILF 0000001 /* illegal func */
#define ER1_ILR 0000002 /* illegal register */
#define ER1_RMR 0000004 /* reg mod refused */
#define ER1_PAR 0000010 /* parity err */
#define ER1_FER 0000020 /* format err NI */
#define ER1_WCF 0000040 /* write clk fail NI */
#define ER1_ECH 0000100 /* ECC hard err NI */
#define ER1_HCE 0000200 /* hdr comp err NI */
#define ER1_HCR 0000400 /* hdr CRC err NI */
#define ER1_AOE 0001000 /* addr ovflo err */
#define ER1_IAE 0002000 /* invalid addr err */
#define ER1_WLE 0004000 /* write lock err */
#define ER1_DTE 0010000 /* drive time err NI */
#define ER1_OPI 0020000 /* op incomplete */
#define ER1_UNS 0040000 /* drive unsafe */
#define ER1_DCK 0100000 /* data check NI */
/* RPAS - 176716 - attention summary */
#define AS_U0 0000001 /* unit 0 flag */
/* RPLA - 176720 - look ahead register */
#define LA_V_SC 6 /* sector pos */
/* RPDB - 176722 - data buffer */
/* RPMR - 176724 - maintenace register */
/* RPDT - 176726 - drive type */
/* RPSN - 176730 - serial number */
/* RPOF - 176732 - offset register */
#define OF_HCI 0002000 /* hdr cmp inh NI */
#define OF_ECI 0004000 /* ECC inhibit NI */
#define OF_F22 0010000 /* format NI */
#define OF_MBZ 0161400
/* RPDC - 176734 - desired cylinder */
#define DC_V_CY 0 /* cylinder pos */
#define DC_M_CY 01777 /* cylinder mask */
#define DC_MBZ 0176000
#define GET_CY(x) (((x) >> DC_V_CY) & DC_M_CY)
#define GET_DA(c,fs,d) ((((GET_CY (c) * drv_tab[d].surf) + \
GET_SF (fs)) * drv_tab[d].sect) + GET_SC (fs))
/* RPCC - 176736 - current cylinder */
/* RPER2 - 176740 - error status 2 - drive unsafe conditions */
/* RPER3 - 176742 - error status 3 - more unsafe conditions */
/* RPEC1 - 176744 - ECC status 1 - unimplemented */
/* RPEC2 - 176746 - ECC status 2 - unimplemented */
/* This controller supports many different disk drive types. These drives
are operated in 576 bytes/sector (128 36b words/sector) mode, which gives
them somewhat different geometry from the PDP-11 variants:
type #sectors/ #surfaces/ #cylinders/
surface cylinder drive
RM02/3 30 5 823 =67MB
RP04/5 20 19 411 =88MB
RM80 30 14 559 =124MB
RP06 20 19 815 =176MB
RM05 30 19 823 =256MB
RP07 43 32 630 =516MB
In theory, each drive can be a different type. The size field in
each unit selects the drive capacity for each drive and thus the
drive type. DISKS MUST BE DECLARED IN ASCENDING SIZE.
The RP07, despite its name, uses an RM-style controller.
*/
#define RM03_DTYPE 0
#define RM03_SECT 30
#define RM03_SURF 5
#define RM03_CYL 823
#define RM03_DEV 020024
#define RM03_SIZE (RM03_SECT * RM03_SURF * RM03_CYL * RP_NUMWD)
#define RP04_DTYPE 1
#define RP04_SECT 20
#define RP04_SURF 19
#define RP04_CYL 411
#define RP04_DEV 020020
#define RP04_SIZE (RP04_SECT * RP04_SURF * RP04_CYL * RP_NUMWD)
#define RM80_DTYPE 2
#define RM80_SECT 30
#define RM80_SURF 14
#define RM80_CYL 559
#define RM80_DEV 020026
#define RM80_SIZE (RM80_SECT * RM80_SURF * RM80_CYL * RP_NUMWD)
#define RP06_DTYPE 3
#define RP06_SECT 20
#define RP06_SURF 19
#define RP06_CYL 815
#define RP06_DEV 020022
#define RP06_SIZE (RP06_SECT * RP06_SURF * RP06_CYL * RP_NUMWD)
#define RM05_DTYPE 4
#define RM05_SECT 30
#define RM05_SURF 19
#define RM05_CYL 823
#define RM05_DEV 020027
#define RM05_SIZE (RM05_SECT * RM05_SURF * RM05_CYL * RP_NUMWD)
#define RP07_DTYPE 5
#define RP07_SECT 43
#define RP07_SURF 32
#define RP07_CYL 630
#define RP07_DEV 020042
#define RP07_SIZE (RP07_SECT * RP07_SURF * RP07_CYL * RP_NUMWD)
struct drvtyp {
int32 sect; /* sectors */
int32 surf; /* surfaces */
int32 cyl; /* cylinders */
int32 size; /* #blocks */
int32 devtype; /* device type */
int32 ctrl; /* ctrl type */
};
struct drvtyp drv_tab[] = {
{ RM03_SECT, RM03_SURF, RM03_CYL, RM03_SIZE, RM03_DEV, MBA_RM_CTRL },
{ RP04_SECT, RP04_SURF, RP04_CYL, RP04_SIZE, RP04_DEV, MBA_RP_CTRL },
{ RM80_SECT, RM80_SURF, RM80_CYL, RM80_SIZE, RM80_DEV, MBA_RM_CTRL },
{ RP06_SECT, RP06_SURF, RP06_CYL, RP06_SIZE, RP06_DEV, MBA_RP_CTRL },
{ RM05_SECT, RM05_SURF, RM05_CYL, RM05_SIZE, RM05_DEV, MBA_RM_CTRL },
{ RP07_SECT, RP07_SURF, RP07_CYL, RP07_SIZE, RP07_DEV, MBA_RM_CTRL },
{ 0 }
};
extern d10 *M; /* memory */
extern int32 int_req;
extern int32 ubmap[UBANUM][UMAP_MEMSIZE]; /* Unibus maps */
extern int32 ubcs[UBANUM];
extern UNIT cpu_unit;
extern uint32 fe_bootrh;
extern int32 fe_bootunit;
int32 rpcs1 = 0; /* control/status 1 */
int32 rpwc = 0; /* word count */
int32 rpba = 0; /* bus address */
int32 rpcs2 = 0; /* control/status 2 */
int32 rpdb = 0; /* data buffer */
uint16 rpda[RP_NUMDR] = { 0 }; /* track/sector */
uint16 rpds[RP_NUMDR] = { 0 }; /* drive status */
uint16 rper1[RP_NUMDR] = { 0 }; /* error status 1 */
uint16 rmhr[RP_NUMDR] = { 0 }; /* holding reg */
uint16 rpmr[RP_NUMDR] = { 0 }; /* maint reg */
uint16 rmmr2[RP_NUMDR] = { 0 }; /* maint reg 2 */
uint16 rpof[RP_NUMDR] = { 0 }; /* offset */
uint16 rpdc[RP_NUMDR] = { 0 }; /* cylinder */
uint16 rper2[RP_NUMDR] = { 0 }; /* error status 2 */
uint16 rper3[RP_NUMDR] = { 0 }; /* error status 3 */
uint16 rpec1[RP_NUMDR] = { 0 }; /* ECC correction 1 */
uint16 rpec2[RP_NUMDR] = { 0 }; /* ECC correction 2 */
int32 rpiff = 0; /* INTR flip/flop */
int32 rp_stopioe = 1; /* stop on error */
int32 rp_swait = 10; /* seek time */
int32 rp_rwait = 10; /* rotate time */
static int32 reg_in_drive[32] = {
0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1,
1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
t_stat rp_rd (int32 *data, int32 PA, int32 access);
t_stat rp_wr (int32 data, int32 PA, int32 access);
int32 rp_inta (void);
t_stat rp_svc (UNIT *uptr);
t_stat rp_reset (DEVICE *dptr);
t_stat rp_boot (int32 unitno, DEVICE *dptr);
t_stat rp_attach (UNIT *uptr, char *cptr);
t_stat rp_detach (UNIT *uptr);
void set_rper (int16 flag, int32 drv);
void update_rpcs (int32 flags, int32 drv);
void rp_go (int32 drv, int32 fnc);
t_stat rp_set_size (UNIT *uptr, int32 val, char *cptr, void *desc);
/* RP data structures
rp_dev RP device descriptor
rp_unit RP unit list
rp_reg RP register list
rp_mod RP modifier list
*/
DIB rp_dib = {
IOBA_RP, IOLN_RP, &rp_rd, &rp_wr,
1, IVCL (RP), VEC_RP, { &rp_inta }, IOLN_RP
};
UNIT rp_unit[] = {
{ UDATA (&rp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+
UNIT_ROABLE+(RP06_DTYPE << UNIT_V_DTYPE), RP06_SIZE) },
{ UDATA (&rp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+
UNIT_ROABLE+(RP06_DTYPE << UNIT_V_DTYPE), RP06_SIZE) },
{ UDATA (&rp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+
UNIT_ROABLE+(RP06_DTYPE << UNIT_V_DTYPE), RP06_SIZE) },
{ UDATA (&rp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+
UNIT_ROABLE+(RP06_DTYPE << UNIT_V_DTYPE), RP06_SIZE) },
{ UDATA (&rp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+
UNIT_ROABLE+(RP06_DTYPE << UNIT_V_DTYPE), RP06_SIZE) },
{ UDATA (&rp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+
UNIT_ROABLE+(RP06_DTYPE << UNIT_V_DTYPE), RP06_SIZE) },
{ UDATA (&rp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+
UNIT_ROABLE+(RP06_DTYPE << UNIT_V_DTYPE), RP06_SIZE) },
{ UDATA (&rp_svc, UNIT_FIX+UNIT_ATTABLE+UNIT_DISABLE+
UNIT_ROABLE+(RP06_DTYPE << UNIT_V_DTYPE), RP06_SIZE) }
};
REG rp_reg[] = {
{ ORDATA (RPCS1, rpcs1, 16) },
{ ORDATA (RPWC, rpwc, 16) },
{ ORDATA (RPBA, rpba, 16) },
{ ORDATA (RPCS2, rpcs2, 16) },
{ ORDATA (RPDB, rpdb, 16) },
{ BRDATA (RPDA, rpda, 8, 16, RP_NUMDR) },
{ BRDATA (RPDS, rpds, 8, 16, RP_NUMDR) },
{ BRDATA (RPER1, rper1, 8, 16, RP_NUMDR) },
{ BRDATA (RPHR, rmhr, 8, 16, RP_NUMDR) },
{ BRDATA (RPOF, rpof, 8, 16, RP_NUMDR) },
{ BRDATA (RPDC, rpdc, 8, 16, RP_NUMDR) },
{ BRDATA (RPER2, rper2, 8, 16, RP_NUMDR) },
{ BRDATA (RPER3, rper3, 8, 16, RP_NUMDR) },
{ BRDATA (RPEC1, rpec1, 8, 16, RP_NUMDR) },
{ BRDATA (RPEC2, rpec2, 8, 16, RP_NUMDR) },
{ BRDATA (RMMR, rpmr, 8, 16, RP_NUMDR) },
{ BRDATA (RMMR2, rmmr2, 8, 16, RP_NUMDR) },
{ FLDATA (IFF, rpiff, 0) },
{ FLDATA (INT, int_req, INT_V_RP) },
{ FLDATA (SC, rpcs1, CSR_V_ERR) },
{ FLDATA (DONE, rpcs1, CSR_V_DONE) },
{ FLDATA (IE, rpcs1, CSR_V_IE) },
{ DRDATA (STIME, rp_swait, 24), REG_NZ + PV_LEFT },
{ DRDATA (RTIME, rp_rwait, 24), REG_NZ + PV_LEFT },
{ URDATA (FNC, rp_unit[0].FUNC, 8, 5, 0, RP_NUMDR, REG_HRO) },
{ URDATA (CAPAC, rp_unit[0].capac, 10, T_ADDR_W, 0,
RP_NUMDR, PV_LEFT | REG_HRO) },
{ FLDATA (STOP_IOE, rp_stopioe, 0) },
{ NULL }
};
MTAB rp_mod[] = {
{ UNIT_WLK, 0, "write enabled", "WRITEENABLED", NULL },
{ UNIT_WLK, UNIT_WLK, "write locked", "LOCKED", NULL },
{ (UNIT_DTYPE+UNIT_ATT), (RM03_DTYPE << UNIT_V_DTYPE) + UNIT_ATT,
"RM03", NULL, NULL },
{ (UNIT_DTYPE+UNIT_ATT), (RP04_DTYPE << UNIT_V_DTYPE) + UNIT_ATT,
"RP04", NULL, NULL },
{ (UNIT_DTYPE+UNIT_ATT), (RM80_DTYPE << UNIT_V_DTYPE) + UNIT_ATT,
"RM80", NULL, NULL },
{ (UNIT_DTYPE+UNIT_ATT), (RP06_DTYPE << UNIT_V_DTYPE) + UNIT_ATT,
"RP06", NULL, NULL },
{ (UNIT_DTYPE+UNIT_ATT), (RM05_DTYPE << UNIT_V_DTYPE) + UNIT_ATT,
"RM05", NULL, NULL },
{ (UNIT_DTYPE+UNIT_ATT), (RP07_DTYPE << UNIT_V_DTYPE) + UNIT_ATT,
"RP07", NULL, NULL },
{ (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (RM03_DTYPE << UNIT_V_DTYPE),
"RM03", NULL, NULL },
{ (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (RP04_DTYPE << UNIT_V_DTYPE),
"RP04", NULL, NULL },
{ (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (RM80_DTYPE << UNIT_V_DTYPE),
"RM80", NULL, NULL },
{ (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (RP06_DTYPE << UNIT_V_DTYPE),
"RP06", NULL, NULL },
{ (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (RM05_DTYPE << UNIT_V_DTYPE),
"RM05", NULL, NULL },
{ (UNIT_AUTO+UNIT_DTYPE+UNIT_ATT), (RP07_DTYPE << UNIT_V_DTYPE),
"RP07", NULL, NULL },
{ (UNIT_AUTO+UNIT_ATT), UNIT_AUTO, "autosize", NULL, NULL },
{ UNIT_AUTO, UNIT_AUTO, NULL, "AUTOSIZE", NULL },
{ (UNIT_AUTO+UNIT_DTYPE), (RM03_DTYPE << UNIT_V_DTYPE),
NULL, "RM03", &rp_set_size },
{ (UNIT_AUTO+UNIT_DTYPE), (RP04_DTYPE << UNIT_V_DTYPE),
NULL, "RP04", &rp_set_size },
{ (UNIT_AUTO+UNIT_DTYPE), (RM80_DTYPE << UNIT_V_DTYPE),
NULL, "RM80", &rp_set_size },
{ (UNIT_AUTO+UNIT_DTYPE), (RP06_DTYPE << UNIT_V_DTYPE),
NULL, "RP06", &rp_set_size },
{ (UNIT_AUTO+UNIT_DTYPE), (RM05_DTYPE << UNIT_V_DTYPE),
NULL, "RM05", &rp_set_size },
{ (UNIT_AUTO+UNIT_DTYPE), (RP07_DTYPE << UNIT_V_DTYPE),
NULL, "RP07", &rp_set_size },
{ MTAB_XTD|MTAB_VDV, 0, "ADDRESS", NULL,
NULL, &show_addr, NULL },
{ MTAB_XTD|MTAB_VDV, 0, "VECTOR", NULL,
NULL, &show_vec, NULL },
{ 0 }
};
DEVICE rp_dev = {
"RP", rp_unit, rp_reg, rp_mod,
RP_NUMDR, 8, 30, 1, 8, 36,
NULL, NULL, &rp_reset,
&rp_boot, &rp_attach, &rp_detach,
&rp_dib, DEV_UBUS
};
/* I/O dispatch routines, I/O addresses 17776700 - 17776776 */
t_stat rp_rd (int32 *data, int32 PA, int32 access)
{
int32 drv, dtype, i, j;
drv = GET_UNIT (rpcs2); /* get current unit */
dtype = GET_DTYPE (rp_unit[drv].flags); /* get drive type */
j = (PA >> 1) & 037; /* get reg offset */
if (reg_in_drive[j] && (rp_unit[drv].flags & UNIT_DIS)) { /* nx disk */
rpcs2 = rpcs2 | CS2_NED; /* set error flag */
update_rpcs (CS1_SC, drv); /* request intr */
*data = 0;
return SCPE_OK;
}
update_rpcs (0, drv); /* update status */
switch (j) { /* decode PA<5:1> */
case 000: /* RPCS1 */
*data = rpcs1;
break;
case 001: /* RPWC */
*data = rpwc;
break;
case 002: /* RPBA */
*data = rpba = rpba & ~BA_MBZ;
break;
case 003: /* RPDA */
*data = rpda[drv] = rpda[drv] & ~DA_MBZ;
break;
case 004: /* RPCS2 */
*data = rpcs2 = (rpcs2 & ~CS2_MBZ) | CS2_IR | CS2_OR;
break;
case 005: /* RPDS */
*data = rpds[drv];
break;
case 006: /* RPER1 */
*data = rper1[drv];
break;
case 007: /* RPAS */
*data = 0;
for (i = 0; i < RP_NUMDR; i++)
if (rpds[i] & DS_ATA)
*data = *data | (AS_U0 << i);
break;
case 010: /* RPLA */
*data = GET_SECTOR (rp_rwait, dtype) << LA_V_SC;
break;
case 011: /* RPDB */
*data = rpdb;
break;
case 012: /* RPMR */
*data = rpmr[drv];
break;
case 013: /* RPDT */
*data = drv_tab[dtype].devtype;
break;
case 014: /* RPSN */
*data = 020 | (drv + 1);
break;
case 015: /* RPOF */
*data = rpof[drv] = rpof[drv] & ~OF_MBZ;
break;
case 016: /* RPDC */
*data = rpdc[drv] = rpdc[drv] & ~DC_MBZ;
break;
case 017: /* RPCC, RMHR */
if (drv_tab[dtype].ctrl == MBA_RP_CTRL) /* RP is CC */
*data = rp_unit[drv].CYL;
else *data = rmhr[drv] ^ 0177777; /* RM is HR */
break;
case 020: /* RPER2, RMMR2 */
if (drv_tab[dtype].ctrl == MBA_RP_CTRL) /* RP is ER2 */
*data = rper2[drv];
else *data = rmmr2[drv]; /* RM is MR2 */
break;
case 021: /* RPER3, RMER2 */
if (drv_tab[dtype].ctrl == MBA_RP_CTRL) /* RP is ER3 */
*data = rper3[drv];
else *data = rper2[drv]; /* RM is ER2 */
break;
case 022: /* RPEC1 */
*data = rpec1[drv];
break;
case 023: /* RPEC2 */
*data = rpec2[drv];
break;
default: /* all others */
set_rper (ER1_ILR, drv);
update_rpcs (0, drv);
break;
}
return SCPE_OK;
}
t_stat rp_wr (int32 data, int32 PA, int32 access)
{
int32 cs1f, drv, i, j;
UNIT *uptr;
cs1f = 0; /* no int on cs1 upd */
drv = GET_UNIT (rpcs2); /* get current unit */
uptr = rp_dev.units + drv; /* get unit */
j = (PA >> 1) & 037; /* get reg offset */
if (reg_in_drive[j] && (rp_unit[drv].flags & UNIT_DIS)) { /* nx disk */
rpcs2 = rpcs2 | CS2_NED; /* set error flag */
update_rpcs (CS1_SC, drv); /* request intr */
return SCPE_OK;
}
if (reg_in_drive[j] && sim_is_active (uptr) && (uptr->flags & UNIT_UTS)) { /* unit busy? */
set_rper (ER1_RMR, drv); /* won't write */
update_rpcs (0, drv);
return SCPE_OK;
}
rmhr[drv] = (uint16)data;
switch (j) { /* decode PA<5:1> */
case 000: /* RPCS1 */
if ((access == WRITEB) && (PA & 1))
data = data << 8;
if (data & CS1_TRE) { /* error clear? */
rpcs1 = rpcs1 & ~CS1_TRE; /* clr CS1<TRE> */
rpcs2 = rpcs2 & ~CS2_ERR; /* clr CS2<15:8> */
}
if ((access == WRITE) || (PA & 1)) { /* hi byte write? */
if (rpcs1 & CS1_DONE) /* done set? */
rpcs1 = (rpcs1 & ~CS1_UAE) | (data & CS1_UAE);
}
if ((access == WRITE) || !(PA & 1)) { /* lo byte write? */
if ((data & CS1_DONE) && (data & CS1_IE)) /* to DONE+IE? */
rpiff = 1; /* set CSTB INTR */
rpcs1 = (rpcs1 & ~CS1_IE) | (data & CS1_IE);
if (uptr->flags & UNIT_DIS) { /* nx disk? */
rpcs2 = rpcs2 | CS2_NED; /* set error flag */
cs1f = CS1_SC; /* req interrupt */
}
else if (sim_is_active (uptr) && (uptr->flags & UNIT_UTS))
set_rper (ER1_RMR, drv); /* won't write */
else if (data & CS1_GO) { /* start op */
uptr->FUNC = GET_FNC (data); /* set func */
if ((uptr->FUNC >= FNC_XFER) && /* data xfer and */
((rpcs1 & CS1_DONE) == 0)) /* ~rdy? PGE */
rpcs2 = rpcs2 | CS2_PGE;
else rp_go (drv, uptr->FUNC);
}
}
break;
case 001: /* RPWC */
if (access == WRITEB)
data = (PA & 1)?
(rpwc & 0377) | (data << 8): (rpwc & ~0377) | data;
rpwc = data;
break;
case 002: /* RPBA */
if (access == WRITEB)
data = (PA & 1)?
(rpba & 0377) | (data << 8): (rpba & ~0377) | data;
rpba = data & ~BA_MBZ;
break;
case 003: /* RPDA */
if ((access == WRITEB) && (PA & 1))
data = data << 8;
rpda[drv] = (uint16)(data & ~DA_MBZ);
break;
case 004: /* RPCS2 */
if ((access == WRITEB) && (PA & 1))
data = data << 8;
if (data & CS2_CLR) /* init? */
rp_reset (&rp_dev);
else {
if ((data & ~rpcs2) & (CS2_PE | CS2_MXF))
cs1f = CS1_SC; /* diagn intr */
if (access == WRITEB) /* merge data */
data = (rpcs2 & ((PA & 1)? 0377: 0177400)) | data;
rpcs2 = (rpcs2 & ~CS2_RW) | (data & CS2_RW) | CS2_IR | CS2_OR;
}
drv = GET_UNIT (rpcs2);
break;
case 006: /* RPER1 */
if ((access == WRITEB) && (PA & 1))
data = data << 8;
rper1[drv] = (uint16)data;
break;
case 007: /* RPAS */
if ((access == WRITEB) && (PA & 1))
break;
for (i = 0; i < RP_NUMDR; i++)
if (data & (AS_U0 << i))
rpds[i] = rpds[i] & ~DS_ATA;
break;
case 011: /* RPDB */
if (access == WRITEB)
data = (PA & 1)?
(rpdb & 0377) | (data << 8): (rpdb & ~0377) | data;
rpdb = data;
break;
case 012: /* RPMR */
if ((access == WRITEB) && (PA & 1))
data = data << 8;
rpmr[drv] = (uint16)data;
break;
case 015: /* RPOF */
rpof[drv] = (uint16)(data & ~OF_MBZ);
break;
case 016: /* RPDC */
if ((access == WRITEB) && (PA & 1))
data = data << 8;
rpdc[drv] = (uint16)(data & ~DC_MBZ);
break;
case 005: /* RPDS */
case 010: /* RPLA */
case 013: /* RPDT */
case 014: /* RPSN */
case 017: /* RPCC, RMHR */
case 020: /* RPER2, RMMR2 */
case 021: /* RPER3, RMER2 */
case 022: /* RPEC1 */
case 023: /* RPEC2 */
break; /* read only */
default: /* all others */
set_rper (ER1_ILR, drv);
break;
} /* end switch */
update_rpcs (cs1f, drv); /* update status */
return SCPE_OK;
}
/* Initiate operation - unit not busy, function set */
void rp_go (int32 drv, int32 fnc)
{
int32 dc, dtype, t;
UNIT *uptr;
uptr = rp_dev.units + drv; /* get unit */
if (uptr->flags & UNIT_DIS) { /* nx unit? */
rpcs2 = rpcs2 | CS2_NED; /* set error flag */
update_rpcs (CS1_SC, drv); /* request intr */
return;
}
if ((fnc != FNC_DCLR) && (rpds[drv] & DS_ERR)) { /* err & ~clear? */
set_rper (ER1_ILF, drv); /* set err, ATN */
update_rpcs (CS1_SC, drv); /* request intr */
return;
}
dtype = GET_DTYPE (uptr->flags); /* get drive type */
rpds[drv] = rpds[drv] & ~DS_ATA; /* clear attention */
dc = rpdc[drv]; /* assume seek, sch */
switch (fnc) { /* case on function */
case FNC_DCLR: /* drive clear */
rper1[drv] = rper2[drv] = rper3[drv] = 0; /* clear errors */
rpec2[drv] = 0; /* clear EC2 */
if (drv_tab[dtype].ctrl == MBA_RM_CTRL) /* RM? */
rpmr[drv] = 0; /* clear maint */
else rpec1[drv] = 0; /* RP, clear EC1 */
case FNC_NOP: /* no operation */
case FNC_RELEASE: /* port release */
return;
case FNC_PRESET: /* read-in preset */
rpdc[drv] = 0; /* clear disk addr */
rpda[drv] = 0;
rpof[drv] = 0; /* clear offset */
case FNC_PACK: /* pack acknowledge */
if ((uptr->flags & UNIT_UTS) == 0) { /* not attached? */
set_rper (ER1_UNS, drv); /* unsafe */
break;
}
rpds[drv] = rpds[drv] | DS_VV; /* set volume valid */
return;
case FNC_OFFSET: /* offset mode */
case FNC_RETURN:
if ((uptr->flags & UNIT_UTS) == 0) { /* not attached? */
set_rper (ER1_UNS, drv); /* unsafe */
break;
}
rpds[drv] = (rpds[drv] & ~DS_RDY) | DS_PIP; /* set positioning */
sim_activate (uptr, rp_swait); /* time operation */
return;
case FNC_UNLOAD: /* unload */
case FNC_RECAL: /* recalibrate */
dc = 0; /* seek to 0 */
case FNC_SEEK: /* seek */
case FNC_SEARCH: /* search */
if ((uptr->flags & UNIT_UTS) == 0) { /* not attached? */
set_rper (ER1_UNS, drv); /* unsafe */
break;
}
if ((GET_CY (dc) >= drv_tab[dtype].cyl) || /* bad cylinder */
(GET_SF (rpda[drv]) >= drv_tab[dtype].surf) || /* bad surface */
(GET_SC (rpda[drv]) >= drv_tab[dtype].sect)) { /* or bad sector? */
set_rper (ER1_IAE, drv);
break;
}
rpds[drv] = (rpds[drv] & ~DS_RDY) | DS_PIP; /* set positioning */
t = abs (dc - uptr->CYL); /* cyl diff */
if (t == 0) /* min time */
t = 1;
sim_activate (uptr, rp_swait * t); /* schedule */
uptr->CYL = dc; /* save cylinder */
return;
case FNC_WRITEH: /* write headers */
case FNC_WRITE: /* write */
case FNC_WCHK: /* write check */
case FNC_READ: /* read */
case FNC_READH: /* read headers */
if ((uptr->flags & UNIT_UTS) == 0) { /* not attached? */
set_rper (ER1_UNS, drv); /* unsafe */
break;
}
rpcs2 = rpcs2 & ~CS2_ERR; /* clear errors */
rpcs1 = rpcs1 & ~(CS1_TRE | CS1_MCPE | CS1_DONE);
if ((GET_CY (dc) >= drv_tab[dtype].cyl) || /* bad cylinder */
(GET_SF (rpda[drv]) >= drv_tab[dtype].surf) || /* bad surface */
(GET_SC (rpda[drv]) >= drv_tab[dtype].sect)) { /* or bad sector? */
set_rper (ER1_IAE, drv);
break;
}
rpds[drv] = rpds[drv] & ~DS_RDY; /* clear drive rdy */
sim_activate (uptr, rp_rwait + (rp_swait * abs (dc - uptr->CYL)));
uptr->CYL = dc; /* save cylinder */
return;
default: /* all others */
set_rper (ER1_ILF, drv); /* not supported */
break;
}
update_rpcs (CS1_SC, drv); /* req intr */
return;
}
/* Service unit timeout
Complete movement or data transfer command
Unit must exist - can't remove an active unit
Unit must be attached - detach cancels in progress operations
*/
t_stat rp_svc (UNIT *uptr)
{
int32 i, dtype, drv, err;
int32 ba, da, vpn;
a10 pa10, mpa10;
int32 wc10, twc10, awc10, fc10;
static d10 dbuf[RP_MAXFR];
dtype = GET_DTYPE (uptr->flags); /* get drive type */
drv = (int32) (uptr - rp_dev.units); /* get drv number */
if ((uptr->flags & UNIT_UTS) == 0) { /* Transition to up-to-speed */
uptr->flags |= UNIT_UTS;
rpds[drv] = DS_ATA | DS_MOL | DS_DPR | DS_RDY |
((uptr->flags & UNIT_WPRT)? DS_WRL: 0);
update_rpcs (CS1_SC, drv);
return SCPE_OK;
}
rpds[drv] = (rpds[drv] & ~DS_PIP) | DS_RDY; /* change drive status */
switch (uptr->FUNC) { /* case on function */
case FNC_OFFSET: /* offset */
rpds[drv] = rpds[drv] | DS_OF | DS_ATA; /* set offset, attention */
update_rpcs (CS1_SC, drv);
break;
case FNC_RETURN: /* return to centerline */
rpds[drv] = (rpds[drv] & ~DS_OF) | DS_ATA; /* clear offset, set attn */
update_rpcs (CS1_SC, drv);
break;
case FNC_UNLOAD: /* unload */
rp_detach (uptr); /* detach unit */
rpds[drv] &= ~DS_ATA; /* Unload does not interrupt */
update_rpcs (0, drv);
break;
case FNC_RECAL: /* recalibrate */
case FNC_SEARCH: /* search */
case FNC_SEEK: /* seek */
rpds[drv] = rpds[drv] | DS_ATA; /* set attention */
update_rpcs (CS1_SC, drv);
break;
/* Reads and writes must take into account the complicated relationship
between Unibus addresses and PDP-10 memory addresses, and Unibus
byte and word counts, PDP-10 UBA word counts, and simulator PDP-10
word counts (due to the fact that the simulator must transfer eight
8b bytes to do a 36b transfer, whereas the UBA did four 9b bytes).
*/
#define XWC_MBZ 0000001 /* wc<0> must be 0 */
#define XBA_MBZ 0000003 /* addr<1:0> must be 0 */
case FNC_WRITE: /* write */
if (uptr->flags & UNIT_WPRT) { /* write locked? */
set_rper (ER1_WLE, drv); /* set drive error */
update_rpcs (CS1_DONE | CS1_TRE, drv); /* set done, err */
break;
}
case FNC_WCHK: /* write check */
case FNC_READ: /* read */
case FNC_READH: /* read headers */
ba = GET_UAE (rpcs1) | rpba; /* get byte addr */
wc10 = (0200000 - rpwc) >> 1; /* get PDP-10 wc */
da = GET_DA (rpdc[drv], rpda[drv], dtype) * RP_NUMWD; /* get disk addr */
if ((da + wc10) > drv_tab[dtype].size) { /* disk overrun? */
set_rper (ER1_AOE, drv);
if (wc10 > (drv_tab[dtype].size - da))
wc10 = drv_tab[dtype].size - da;
}
err = fseek (uptr->fileref, da * sizeof (d10), SEEK_SET);
if (uptr->FUNC == FNC_WRITE) { /* write? */
for (twc10 = 0; twc10 < wc10; twc10++) {
pa10 = ba >> 2;
vpn = PAG_GETVPN (pa10); /* map addr */
if ((vpn >= UMAP_MEMSIZE) || (ba & XBA_MBZ) || (rpwc & XWC_MBZ) ||
((ubmap[0][vpn] & (UMAP_VLD | UMAP_DSB | UMAP_RRV)) != UMAP_VLD)) {
rpcs2 = rpcs2 | CS2_NEM; /* set error */
ubcs[0] = ubcs[0] | UBCS_TMO; /* UBA times out */
break;
}
mpa10 = (ubmap[0][vpn] + PAG_GETOFF (pa10)) & PAMASK;
if (MEM_ADDR_NXM (mpa10)) { /* nx memory? */
rpcs2 = rpcs2 | CS2_NEM; /* set error */
ubcs[0] = ubcs[0] | UBCS_TMO; /* UBA times out */
break;
}
dbuf[twc10] = M[mpa10]; /* write to disk */
if ((rpcs2 & CS2_UAI) == 0)
ba = ba + 4;
}
if ((fc10 = twc10 & (RP_NUMWD - 1))) { /* fill? */
fc10 = RP_NUMWD - fc10;
for (i = 0; i < fc10; i++)
dbuf[twc10 + i] = 0;
}
fxwrite (dbuf, sizeof (d10), twc10 + fc10, uptr->fileref);
err = ferror (uptr->fileref);
} /* end if */
else { /* read, wchk, readh */
awc10 = fxread (dbuf, sizeof (d10), wc10, uptr->fileref);
err = ferror (uptr->fileref);
for ( ; awc10 < wc10; awc10++)
dbuf[awc10] = 0;
for (twc10 = 0; twc10 < wc10; twc10++) {
pa10 = ba >> 2;
vpn = PAG_GETVPN (pa10); /* map addr */
if ((vpn >= UMAP_MEMSIZE) || (ba & XBA_MBZ) || (rpwc & XWC_MBZ) ||
((ubmap[0][vpn] & (UMAP_VLD | UMAP_DSB | UMAP_RRV)) != UMAP_VLD)) {
rpcs2 = rpcs2 | CS2_NEM; /* set error */
ubcs[0] = ubcs[0] | UBCS_TMO; /* UBA times out */
break;
}
mpa10 = (ubmap[0][vpn] + PAG_GETOFF (pa10)) & PAMASK;
if (MEM_ADDR_NXM (mpa10)) { /* nx memory? */
rpcs2 = rpcs2 | CS2_NEM; /* set error */
ubcs[0] = ubcs[0] | UBCS_TMO; /* UBA times out */
break;
}
if ((uptr->FUNC == FNC_READ) || /* read or */
(uptr->FUNC == FNC_READH)) /* read header */
M[mpa10] = dbuf[twc10];
else if (M[mpa10] != dbuf[twc10]) { /* wchk, mismatch? */
rpcs2 = rpcs2 | CS2_WCE; /* set error */
break;
}
if ((rpcs2 & CS2_UAI) == 0)
ba = ba + 4;
}
} /* end else */
rpwc = (rpwc + (twc10 << 1)) & 0177777; /* final word count */
rpba = (ba & 0177777) & ~BA_MBZ; /* lower 16b */
rpcs1 = (rpcs1 & ~ CS1_UAE) | ((ba >> (16 - CS1_V_UAE)) & CS1_UAE);
da = da + twc10 + (RP_NUMWD - 1);
if (da >= drv_tab[dtype].size)
rpds[drv] = rpds[drv] | DS_LST;
da = da / RP_NUMWD;
rpda[drv] = (uint16)(da % drv_tab[dtype].sect);
da = da / drv_tab[dtype].sect;
rpda[drv] = (uint16)(rpda[drv] | ((da % drv_tab[dtype].surf) << DA_V_SF));
rpdc[drv] = (uint16)(da / drv_tab[dtype].surf);
if (err != 0) { /* error? */
set_rper (ER1_PAR, drv); /* set drive error */
update_rpcs (CS1_DONE | CS1_TRE, drv); /* set done, err */
sim_perror ("RP I/O error");
clearerr (uptr->fileref);
return SCPE_IOERR;
}
case FNC_WRITEH: /* write headers stub */
update_rpcs (CS1_DONE, drv); /* set done */
break;
} /* end case func */
return SCPE_OK;
}
/* Set drive error */
void set_rper (int16 flag, int32 drv)
{
rper1[drv] = rper1[drv] | flag;
rpds[drv] = rpds[drv] | DS_ATA;
rpcs1 = rpcs1 | CS1_SC;
return;
}
/* Controller status update
Check for done transition
Update drive status
Update RPCS1
Update interrupt request
*/
void update_rpcs (int32 flag, int32 drv)
{
int32 i;
UNIT *uptr;
if ((flag & ~rpcs1) & CS1_DONE) /* DONE 0 to 1? */
rpiff = (rpcs1 & CS1_IE)? 1: 0; /* CSTB INTR <- IE */
uptr = rp_dev.units + drv; /* get unit */
if (rp_unit[drv].flags & UNIT_DIS)
rpds[drv] = rper1[drv] = 0;
else rpds[drv] = (rpds[drv] | DS_DPR) & ~DS_PGM;
if (rp_unit[drv].flags & UNIT_UTS)
rpds[drv] = rpds[drv] | DS_MOL;
else rpds[drv] = rpds[drv] & ~(DS_MOL | DS_VV | DS_RDY);
if (rper1[drv] | rper2[drv] | rper3[drv])
rpds[drv] = rpds[drv] | DS_ERR;
else rpds[drv] = rpds[drv] & ~DS_ERR;
rpcs1 = (rpcs1 & ~(CS1_SC | CS1_MCPE | CS1_MBZ | CS1_DRV)) | CS1_DVA | flag;
rpcs1 = rpcs1 | (uptr->FUNC << CS1_V_FNC);
if (sim_is_active (uptr) && (uptr->flags & UNIT_UTS))
rpcs1 = rpcs1 | CS1_GO;
if (rpcs2 & CS2_ERR)
rpcs1 = rpcs1 | CS1_TRE | CS1_SC;
else if (rpcs1 & CS1_TRE)
rpcs1 = rpcs1 | CS1_SC;
for (i = 0; i < RP_NUMDR; i++) {
if (rpds[i] & DS_ATA) {
rpcs1 = rpcs1 | CS1_SC;
break;
}
}
if (rpiff || ((rpcs1 & CS1_SC) && (rpcs1 & CS1_DONE) && (rpcs1 & CS1_IE)))
int_req = int_req | INT_RP;
else int_req = int_req & ~INT_RP;
return;
}
/* Interrupt acknowledge */
int32 rp_inta (void)
{
rpcs1 = rpcs1 & ~CS1_IE; /* clear int enable */
rpiff = 0; /* clear CSTB INTR */
return VEC_RP; /* acknowledge */
}
/* Device reset */
t_stat rp_reset (DEVICE *dptr)
{
int32 i;
UNIT *uptr;
rpcs1 = CS1_DVA | CS1_DONE;
rpcs2 = CS2_IR | CS2_OR;
rpba = rpwc = 0;
rpiff = 0; /* clear CSTB INTR */
int_req = int_req & ~INT_RP; /* clear intr req */
for (i = 0; i < RP_NUMDR; i++) {
uptr = rp_dev.units + i;
uptr->CYL = uptr->FUNC = 0;
if (uptr->flags & UNIT_ATT)
if (uptr->flags & UNIT_UTS) {
sim_cancel (uptr);
rpds[i] = (rpds[i] & DS_VV) | DS_DPR | DS_RDY | DS_MOL |
((uptr->flags & UNIT_WPRT)? DS_WRL: 0);
} else {
if (!sim_is_active (uptr))
sim_activate_after (uptr, SPINUP_DLY);
rpds[i] = DS_DPR | ((uptr->flags & UNIT_WPRT)? DS_WRL: 0);
}
else {
sim_cancel (uptr);
if (uptr->flags & UNIT_DIS)
rpds[i] = 0;
else rpds[i] = DS_DPR;
}
rper1[i] = 0;
rper2[i] = 0;
rper3[i] = 0;
rpda[i] = 0;
rpdc[i] = 0;
rpmr[i] = 0;
rpof[i] = 0;
rpec1[i] = 0;
rpec2[i] = 0;
rmmr2[i] = 0;
rmhr[i] = 0;
}
return SCPE_OK;
}
/* Device attach */
t_stat rp_attach (UNIT *uptr, char *cptr)
{
int32 i, p;
t_stat r;
uptr->capac = drv_tab[GET_DTYPE (uptr->flags)].size;
r = attach_unit (uptr, cptr);
if (r != SCPE_OK)
return r;
sim_cancel (uptr);
uptr->flags &= ~UNIT_UTS;
sim_activate_after (uptr, SPINUP_DLY);
if ((uptr->flags & UNIT_AUTO) == 0) /* autosize? */
return SCPE_OK;
if ((p = sim_fsize (uptr->fileref)) == 0)
return SCPE_OK;
for (i = 0; drv_tab[i].sect != 0; i++) {
if (p <= (drv_tab[i].size * (int) sizeof (d10))) {
uptr->flags = (uptr->flags & ~UNIT_DTYPE) | (i << UNIT_V_DTYPE);
uptr->capac = drv_tab[i].size;
return SCPE_OK;
}
}
/* File is larger than max known disk. This should probably fail. */
return SCPE_OK;
}
/* Device detach */
t_stat rp_detach (UNIT *uptr)
{
int32 drv;
if (!(uptr->flags & UNIT_ATT)) /* attached? */
return SCPE_OK;
drv = (int32) (uptr - rp_dev.units); /* get drv number */
rpds[drv] = (rpds[drv] & ~(DS_MOL | DS_RDY | DS_WRL | DS_VV | DS_OF)) |
DS_ATA;
if (sim_is_active (uptr)) { /* unit active? */
sim_cancel (uptr); /* cancel operation */
if (uptr->flags & UNIT_UTS) {
rper1[drv] = rper1[drv] | ER1_OPI; /* set drive error */
if (uptr->FUNC >= FNC_WCHK) /* data transfer? */
rpcs1 = rpcs1 | CS1_DONE | CS1_TRE; /* set done, err */
}
}
uptr->flags &= ~UNIT_UTS;
update_rpcs (0, drv); /* request intr */
return detach_unit (uptr);
}
/* Set size command validation routine */
t_stat rp_set_size (UNIT *uptr, int32 val, char *cptr, void *desc)
{
int32 dtype = GET_DTYPE (val);
if (uptr->flags & UNIT_ATT)
return SCPE_ALATT;
uptr->capac = drv_tab[dtype].size;
return SCPE_OK;
}
/* Device bootstrap
* The DEC and ITS versions are word-for-word identical, except that
* the DEC RDIO/WRIO are replaced by IORDQ and IOWRQ. This is hand
* assembled code, so please always make changes in both.
* Due to a typo in the KS Console rom, block 010 is read for the
* alternate HOM block. The correct block is 012. For compatibiliy,
* we will do what the hardware did first, what's right if it fails (as it will).
*/
#define BOOT_START 0377000 /* start */
#define BOOT_LEN (sizeof (boot_rom_dec) / sizeof (d10))
static const d10 boot_rom_dec[] = {
INT64_C(0510040000000)+FE_RHBASE, /* boot:hllz 1,FE_RHBASE ; uba # */
INT64_C(0201000140001), /* movei 0,140001 ; vld,fst,pg 1 */
INT64_C(0713001000000)+((IOBA_UBMAP+1) & RMASK), /* wrio 0,763001(1); set ubmap */
INT64_C(0200040000000)+FE_RHBASE, /* move 1,FE_RHBASE */
INT64_C(0201000000040), /* movei 0,40 ; ctrl reset */
INT64_C(0713001000010), /* wrio 0,10(1) ; ->RPCS2 */
INT64_C(0200240000000)+FE_UNIT, /* move 5,FE_UNIT ; unit */
INT64_C(0713241000010), /* wrio 5,10(1) ; select ->RPCS2 */
INT64_C(0712001000012), /*10 rdio 0,12(1) ; RPDS */
INT64_C(0640000010600), /* trc 0,10600 ; MOL + DPR + RDY */
INT64_C(0642000010600), /* trce 0,10600 ; */
INT64_C(0254000377010), /* jrst .-3 ; wait */
INT64_C(0201000000377), /* movei 0,377 ; All units */
INT64_C(0713001000016), /* wrio 0,16(1) ; Clear on-line attns */
INT64_C(0201000000021), /* movei 0,21 ; preset */
INT64_C(0713001000000), /* wrio 0,0(1) ; ->RPCS1 */
INT64_C(0201100000001), /*20 movei 2,1 ; blk #1 */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0204140001000), /* movs 3,1000 ; id word */
INT64_C(0306140505755), /* cain 3,sixbit /HOM/ */
INT64_C(0254000377032), /* jrst pg ; match */
INT64_C(0201100000010), /* movei 2,10 ; blk #10 */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0204140001000), /* movs 3,1000 ; id word */
INT64_C(0302140505755), /*30 caie 3,sixbit /HOM/ */
INT64_C(0254000377061), /* jrst alt2 ; inv home */
INT64_C(0336100001103), /* pg: skipn 2,1103 ; pg of ptrs */
INT64_C(0254200377033), /* halt . ; inv ptr */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0336100001004), /* skipn 2,1004 ; mon boot */
INT64_C(0254200377036), /* halt . ; inv ptr */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0254000001000), /*40 jrst 1000 ; start */
INT64_C(0201140176000), /* rdbl:movei 3,176000 ; wd cnt 1P = -512*2 */
INT64_C(0201200004000), /* movei 4,4000 ; 11 addr => M[1000] */
INT64_C(0200300000002), /* move 6,2 */
INT64_C(0242300777750), /* lsh 6,-24. ; cyl */
INT64_C(0713141000002), /* wrio 3,2(1) ; ->RPWC */
INT64_C(0713201000004), /* wrio 4,4(1) ; ->RPBA */
INT64_C(0713101000006), /* wrio 2,6(1) ; ->RPDA */
INT64_C(0713301000034), /*50 wrio 6,34(1) ; ->RPDC */
INT64_C(0201000000071), /* movei 0,71 ; read+go */
INT64_C(0713001000000), /* wrio 0,0(1) ; ->RPCS1 */
INT64_C(0712341000000), /* rdio 7,0(1) ; read csr */
INT64_C(0606340000200), /* trnn 7,200 ; test rdy */
INT64_C(0254000377053), /* jrst .-2 ; loop */
INT64_C(0602340100000), /* trne 7,100000 ; test err */
INT64_C(0254200377057), /* halt . */
INT64_C(0254017000000), /*60 jrst 0(17) ; return */
INT64_C(0201100000012), /*alt2: movei 2,10. ; blk #10. */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0204140001000), /* movs 3,1000 ; id word */
INT64_C(0302140505755), /* caie 3,sixbit /HOM/ */
INT64_C(0254200377065), /* halt . ; inv home */
INT64_C(0254000377032), /* jrst pg ; Read ptrs */
};
static const d10 boot_rom_its[] = {
INT64_C(0510040000001)+FE_RHBASE, /* boot:hllzi 1,FE_RHBASE ; uba # */
INT64_C(0201000140001), /* movei 0,140001 ; vld,fst,pg 1 */
INT64_C(0715000000000)+((IOBA_UBMAP+1) & RMASK), /* iowrq 0,763001 ; set ubmap */
INT64_C(0200040000000)+FE_RHBASE, /* move 1,FE_RHBASE */
INT64_C(0201000000040), /* movei 0,40 ; ctrl reset */
INT64_C(0715001000010), /* iowrq 0,10(1) ; ->RPCS2 */
INT64_C(0200240000000)+FE_UNIT, /* move 5,FE_UNIT ; unit */
INT64_C(0715241000010), /* iowrq 5,10(1) ; ->RPCS2 */
INT64_C(0711001000012), /*10 iordq 0,12(1) ; RPDS */
INT64_C(0640000010600), /* trc 0,10600 ; MOL + DPR + RDY */
INT64_C(0642000010600), /* trce 0,10600 ; */
INT64_C(0254000377010), /* jrst .-3 ; wait */
INT64_C(0201000000377), /* movei 0,377 ; All units */
INT64_C(0715001000016), /* iowrq 0,16(1) ; Clear on-line attns */
INT64_C(0201000000021), /* movei 0,21 ; preset */
INT64_C(0715001000000), /* iowrq 0,0(1) ; ->RPCS1 */
INT64_C(0201100000001), /*20 movei 2,1 ; blk #1 */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0204140001000), /* movs 3,1000 ; id word */
INT64_C(0306140505755), /* cain 3,sixbit /HOM/ */
INT64_C(0254000377032), /* jrst pg ; match */
INT64_C(0201100000010), /* movei 2,10 ; blk #10 */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0204140001000), /* movs 3,1000 ; id word */
INT64_C(0302140505755), /*30 caie 3,sixbit /HOM/ */
INT64_C(0254000377061), /* jrst alt2 ; inv home */
INT64_C(0336100001103), /* pg: skipn 2,1103 ; pg of ptrs */
INT64_C(0254200377033), /* halt . ; inv ptr */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0336100001004), /* skipn 2,1004 ; mon boot */
INT64_C(0254200377036), /* halt . ; inv ptr */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0254000001000), /*40 jrst 1000 ; start */
INT64_C(0201140176000), /* rdbl:movei 3,176000 ; wd cnt 1P = -512 *2 */
INT64_C(0201200004000), /* movei 4,4000 ; addr */
INT64_C(0200300000002), /* move 6,2 */
INT64_C(0242300777750), /* lsh 6,-24. ; cyl */
INT64_C(0715141000002), /* iowrq 3,2(1) ; ->RPWC */
INT64_C(0715201000004), /* iowrq 4,4(1) ; ->RPBA */
INT64_C(0715101000006), /* iowrq 2,6(1) ; ->RPDA */
INT64_C(0715301000034), /*50 iowrq 6,34(1) ; ->RPDC */
INT64_C(0201000000071), /* movei 0,71 ; read+go */
INT64_C(0715001000000), /* iowrq 0,0(1) ; ->RPCS1 */
INT64_C(0711341000000), /* iordq 7,0(1) ; read csr */
INT64_C(0606340000200), /* trnn 7,200 ; test rdy */
INT64_C(0254000377053), /* jrst .-2 ; loop */
INT64_C(0602340100000), /* trne 7,100000 ; test err */
INT64_C(0254200377057), /* halt */
INT64_C(0254017000000), /*60 jrst 0(17) ; return */
INT64_C(0201100000012), /* alt2:movei 2,10. ; blk #10. */
INT64_C(0265740377041), /* jsp 17,rdbl ; read */
INT64_C(0204140001000), /* movs 3,1000 ; id word */
INT64_C(0302140505755), /* caie 3,sixbit /HOM/ */
INT64_C(0254200377065), /* halt . ; inv home */
INT64_C(0254000377032), /* jrst pg ; Read ptrs */
};
t_stat rp_boot (int32 unitno, DEVICE *dptr)
{
size_t i;
extern a10 saved_PC;
UNIT *uptr;
unitno &= CS2_M_UNIT;
uptr = rp_dev.units + unitno;
if (!(uptr->flags & UNIT_ATT))
return SCPE_NOATT;
M[FE_RHBASE] = fe_bootrh = rp_dib.ba;
M[FE_UNIT] = fe_bootunit = unitno;
assert (sizeof(boot_rom_dec) == sizeof(boot_rom_its));
M[FE_KEEPA] = (M[FE_KEEPA] & ~INT64_C(0xFF)) | ((sim_switches & SWMASK ('A'))? 010 : 0);
for (i = 0; i < BOOT_LEN; i++)
M[BOOT_START + i] = Q_ITS? boot_rom_its[i]: boot_rom_dec[i];
saved_PC = BOOT_START;
return SCPE_OK;
}