| /* vax750_stddev.c: VAX 11/750 standard I/O devices | |
| Copyright (c) 2010-2012, Matt Burke | |
| This module incorporates code from SimH, Copyright (c) 1998-2011, 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 | |
| THE AUTHOR(S) 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(s) of the author(s) shall not be | |
| used in advertising or otherwise to promote the sale, use or other dealings | |
| in this Software without prior written authorization from the author(s). | |
| tti console input | |
| tto console output | |
| td console TU58 | |
| todr TODR clock | |
| tmr interval timer | |
| 22-Oct-12 MP Generalized setting TODR for all OSes. | |
| Unbound the TODR value from the 100hz clock tick | |
| interrupt. TODR now behaves like the original | |
| battery backed-up clock and runs with the wall | |
| clock, not the simulated instruction clock. | |
| Two operational modes are available: | |
| - Default VMS mode, which is similar to the previous | |
| behavior in that without initializing the TODR it | |
| would default to the value VMS would set it to if | |
| VMS knew the correct time. This would be correct | |
| almost all the time unless a VMS disk hadn't been | |
| booted from for more than a year. This mode | |
| produces strange time results for non VMS OSes on | |
| each system boot. | |
| - OS Agnostic mode. This mode behaves precisely like | |
| the VAX780 TODR and works correctly for all OSes. | |
| This mode is enabled by attaching the TODR to a | |
| battery backup state file for the TOY clock | |
| (i.e. sim> attach TODR TOY_CLOCK). When operating | |
| in OS Agnostic mode, the TODR will initially start | |
| counting from 0 and be adjusted differently when an | |
| OS specifically writes to the TODR. VMS will prompt | |
| to set the time on each boot (if the TODR value is | |
| less than about 1 month) unless the SYSGEN | |
| parameter TIMEPROMPTWAIT is set to 0. | |
| 21-Oct-2012 MB First Version | |
| */ | |
| #include "vax_defs.h" | |
| #include "sim_tmxr.h" | |
| #include <time.h> | |
| #include "pdp11_td.h" | |
| /* Terminal definitions */ | |
| #define RXCS_RD (CSR_DONE + CSR_IE) /* terminal input */ | |
| #define RXCS_WR (CSR_IE) | |
| #define RXDB_ERR 0x8000 /* error */ | |
| #define RXDB_OVR 0x4000 /* overrun */ | |
| #define RXDB_FRM 0x2000 /* framing error */ | |
| #define TXCS_RD (CSR_DONE + CSR_IE) /* terminal output */ | |
| #define TXCS_WR (CSR_IE) | |
| #define TXDB_V_SEL 8 /* unit select */ | |
| #define TXDB_M_SEL 0xF | |
| #define TXDB_MISC 0xF /* console misc */ | |
| #define MISC_MASK 0xFF /* console data mask */ | |
| #define MISC_SWDN 0x1 /* software done */ | |
| #define MISC_BOOT 0x2 /* reboot */ | |
| #define MISC_CLWS 0x3 /* clear warm start */ | |
| #define MISC_CLCS 0x4 /* clear cold start */ | |
| #define TXDB_SEL (TXDB_M_SEL << TXDB_V_SEL) /* non-terminal */ | |
| #define TXDB_GETSEL(x) (((x) >> TXDB_V_SEL) & TXDB_M_SEL) | |
| static BITFIELD rx_csr_bits[] = { | |
| BITNCF(6), /* unused */ | |
| BIT(IE), /* Interrupt Enable */ | |
| BIT(DONE), /* Xmit Ready */ | |
| BITNCF(8), /* unused */ | |
| ENDBITS | |
| }; | |
| static BITFIELD rx_buf_bits[] = { | |
| BITF(DAT,8), /* data buffer */ | |
| BITNCF(5), /* unused */ | |
| BIT(RBRK), | |
| BIT(OVR), | |
| BIT(ERR), | |
| ENDBITS | |
| }; | |
| static BITFIELD tx_csr_bits[] = { | |
| BIT(XBR), /* Break */ | |
| BITNC, /* unused */ | |
| BIT(MAINT), /* Maint */ | |
| BITNCF(3), /* unused */ | |
| BIT(IE), /* Interrupt Enable */ | |
| BIT(DONE), /* Xmit Ready */ | |
| BITNCF(8), /* unused */ | |
| ENDBITS | |
| }; | |
| static BITFIELD tx_buf_bits[] = { | |
| BITF(DAT,8), /* data buffer */ | |
| BITNCF(8), /* unused */ | |
| ENDBITS | |
| }; | |
| /* Clock definitions */ | |
| #define TMR_CSR_ERR 0x80000000 /* error W1C */ | |
| #define TMR_CSR_DON 0x00000080 /* done W1C */ | |
| #define TMR_CSR_IE 0x00000040 /* int enb RW */ | |
| #define TMR_CSR_SGL 0x00000020 /* single WO */ | |
| #define TMR_CSR_XFR 0x00000010 /* xfer WO */ | |
| #define TMR_CSR_RUN 0x00000001 /* run RW */ | |
| #define TMR_CSR_RD (TMR_CSR_W1C | TMR_CSR_WR) | |
| #define TMR_CSR_W1C (TMR_CSR_ERR | TMR_CSR_DON) | |
| #define TMR_CSR_WR (TMR_CSR_IE | TMR_CSR_RUN) | |
| #define TMR_INC 10000 /* usec/interval */ | |
| #define CLK_DELAY 5000 /* 100 Hz */ | |
| #define TMXR_MULT 1 /* 100 Hz */ | |
| static BITFIELD tmr_iccs_bits [] = { | |
| BIT(RUN), /* Run */ | |
| BITNCF(3), /* unused */ | |
| BIT(XFR), /* Transfer */ | |
| BIT(SGL), /* Single */ | |
| BIT(IE), /* Interrupt Enable */ | |
| BIT(DON), /* Done */ | |
| BITNCF(23), /* unused */ | |
| BIT(ERR), /* Error */ | |
| ENDBITS | |
| }; | |
| /* TU58 definitions */ | |
| #define UNIT_V_WLK (UNIT_V_UF) /* write locked */ | |
| #define UNIT_WLK (1u << UNIT_V_UF) | |
| #define UNIT_WPRT (UNIT_WLK | UNIT_RO) /* write protect */ | |
| #define TD_NUMBLK 512 /* blocks/tape */ | |
| #define TD_NUMBY 512 /* bytes/block */ | |
| #define TD_SIZE (TD_NUMBLK * TD_NUMBY) /* bytes/tape */ | |
| int32 tti_csr = 0; /* control/status */ | |
| uint32 tti_buftime; /* time input character arrived */ | |
| int32 tti_buf = 0; /* buffer */ | |
| int32 tti_int = 0; /* interrupt */ | |
| int32 tto_csr = 0; /* control/status */ | |
| int32 tto_buf = 0; /* buffer */ | |
| int32 tto_int = 0; /* interrupt */ | |
| int32 csi_int = 0; /* interrupt */ | |
| int32 cso_int = 0; /* interrupt */ | |
| int32 tmr_iccs = 0; /* interval timer csr */ | |
| uint32 tmr_icr = 0; /* curr interval */ | |
| uint32 tmr_nicr = 0; /* next interval */ | |
| uint32 tmr_inc = 0; /* timer increment */ | |
| int32 tmr_int = 0; /* interrupt */ | |
| int32 clk_tps = 100; /* ticks/second */ | |
| int32 tmxr_poll = CLK_DELAY * TMXR_MULT; /* term mux poll */ | |
| int32 tmr_poll = CLK_DELAY; /* pgm timer poll */ | |
| struct todr_battery_info { | |
| uint32 toy_gmtbase; /* GMT base of set value */ | |
| uint32 toy_gmtbasemsec; /* The milliseconds of the set value */ | |
| uint32 toy_endian_plus2; /* 2 -> Big Endian, 3 -> Little Endian, invalid otherwise */ | |
| }; | |
| typedef struct todr_battery_info TOY; | |
| int32 td_regval; /* temp location used in reg declarations */ | |
| t_stat tti_svc (UNIT *uptr); | |
| t_stat tto_svc (UNIT *uptr); | |
| t_stat tmr_svc (UNIT *uptr); | |
| t_stat tti_reset (DEVICE *dptr); | |
| t_stat tto_reset (DEVICE *dptr); | |
| t_stat clk_reset (DEVICE *dptr); | |
| const char *tti_description (DEVICE *dptr); | |
| const char *tto_description (DEVICE *dptr); | |
| const char *clk_description (DEVICE *dptr); | |
| t_stat tti_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr); | |
| t_stat tto_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr); | |
| t_stat clk_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr); | |
| t_stat clk_attach (UNIT *uptr, CONST char *cptr); | |
| t_stat clk_detach (UNIT *uptr); | |
| t_stat tmr_reset (DEVICE *dptr); | |
| const char *tmr_description (DEVICE *dptr); | |
| t_stat td_reset (DEVICE *dptr); | |
| const char *td_description (DEVICE *dptr); | |
| int32 icr_rd (void); | |
| void tmr_incr (uint32 inc); | |
| void tmr_sched (uint32 incr); | |
| t_stat todr_resync (void); | |
| t_stat txdb_misc_wr (int32 data); | |
| extern int32 con_halt (int32 code, int32 cc); | |
| /* TTI data structures | |
| tti_dev TTI device descriptor | |
| tti_unit TTI unit descriptor | |
| tti_reg TTI register list | |
| */ | |
| UNIT tti_unit = { UDATA (&tti_svc, UNIT_IDLE|TT_MODE_8B, 0), TMLN_SPD_9600_BPS }; | |
| REG tti_reg[] = { | |
| { HRDATAD (RXDB, tti_buf, 16, "last data item processed") }, | |
| { HRDATAD (RXCS, tti_csr, 16, "control/status register") }, | |
| { FLDATAD (INT, tti_int, 0, "interrupt pending flag") }, | |
| { FLDATAD (DONE, tti_csr, CSR_V_DONE, "device done flag (CSR<7>)") }, | |
| { FLDATAD (IE, tti_csr, CSR_V_IE, "interrupt enable flag (CSR<6>)") }, | |
| { DRDATAD (POS, tti_unit.pos, T_ADDR_W, "number of characters input"), PV_LEFT }, | |
| { DRDATAD (TIME, tti_unit.wait, 24, "input polling interval"), PV_LEFT }, | |
| { NULL } | |
| }; | |
| MTAB tti_mod[] = { | |
| { TT_MODE, TT_MODE_7B, "7b", "7B", NULL, NULL, NULL, "Set 7 bit mode" }, | |
| { TT_MODE, TT_MODE_8B, "8b", "8B", NULL, NULL, NULL, "Set 8 bit mode" }, | |
| { 0 } | |
| }; | |
| DEVICE tti_dev = { | |
| "TTI", &tti_unit, tti_reg, tti_mod, | |
| 1, 10, 31, 1, 16, 8, | |
| NULL, NULL, &tti_reset, | |
| NULL, NULL, NULL, | |
| NULL, 0, 0, NULL, NULL, NULL, &tti_help, NULL, NULL, | |
| &tti_description | |
| }; | |
| /* TTO data structures | |
| tto_dev TTO device descriptor | |
| tto_unit TTO unit descriptor | |
| tto_reg TTO register list | |
| */ | |
| UNIT tto_unit = { UDATA (&tto_svc, TT_MODE_8B, 0), SERIAL_OUT_WAIT }; | |
| REG tto_reg[] = { | |
| { HRDATAD (TXDB, tto_buf, 16, "last data item processed") }, | |
| { HRDATAD (TXCS, tto_csr, 16, "control/status register") }, | |
| { FLDATAD (INT, tto_int, 0, "interrupt pending flag") }, | |
| { FLDATAD (DONE, tto_csr, CSR_V_DONE, "device done flag (CSR<7>)") }, | |
| { FLDATAD (IE, tto_csr, CSR_V_IE, "interrupt enable flag (CSR<6>)") }, | |
| { DRDATAD (POS, tto_unit.pos, T_ADDR_W, "number of characters output"), PV_LEFT }, | |
| { DRDATAD (TIME, tto_unit.wait, 24, "time from I/O initiation to interrupt"), PV_LEFT + REG_NZ }, | |
| { NULL } | |
| }; | |
| MTAB tto_mod[] = { | |
| { TT_MODE, TT_MODE_7B, "7b", "7B", NULL, NULL, NULL, "Set 7 bit mode" }, | |
| { TT_MODE, TT_MODE_8B, "8b", "8B", NULL, NULL, NULL, "Set 8 bit mode" }, | |
| { TT_MODE, TT_MODE_7P, "7p", "7P", NULL, NULL, NULL, "Set 7 bit mode (suppress non printing)" }, | |
| { 0 } | |
| }; | |
| DEVICE tto_dev = { | |
| "TTO", &tto_unit, tto_reg, tto_mod, | |
| 1, 10, 31, 1, 16, 8, | |
| NULL, NULL, &tto_reset, | |
| NULL, NULL, NULL, | |
| NULL, 0, 0, NULL, NULL, NULL, &tto_help, NULL, NULL, | |
| &tto_description | |
| }; | |
| /* TODR and TMR data structures */ | |
| UNIT clk_unit = { UDATA (NULL, UNIT_IDLE+UNIT_FIX, sizeof(TOY))}; | |
| REG clk_reg[] = { | |
| { DRDATAD (TIME, clk_unit.wait, 24, "initial poll interval"), REG_NZ + PV_LEFT }, | |
| { DRDATAD (POLL, tmr_poll, 24, "calibrated poll interval"), REG_NZ + PV_LEFT + REG_HRO }, | |
| #if defined (SIM_ASYNCH_IO) | |
| { DRDATAD (ASYNCH, sim_asynch_enabled, 1, "asynch I/O enabled flag"), PV_LEFT }, | |
| { DRDATAD (LATENCY, sim_asynch_latency, 32, "desired asynch interrupt latency"), PV_LEFT }, | |
| { DRDATAD (INST_LATENCY, sim_asynch_inst_latency, 32, "calibrated instruction latency"), PV_LEFT }, | |
| #endif | |
| { NULL } | |
| }; | |
| DEVICE clk_dev = { | |
| "TODR", &clk_unit, clk_reg, NULL, | |
| 1, 0, 8, 4, 0, 32, | |
| NULL, NULL, &clk_reset, | |
| NULL, &clk_attach, &clk_detach, | |
| NULL, 0, 0, NULL, NULL, NULL, &clk_help, NULL, NULL, | |
| &clk_description | |
| }; | |
| UNIT tmr_unit = { UDATA (&tmr_svc, 0, 0) }; /* timer */ | |
| REG tmr_reg[] = { | |
| { HRDATADF (ICCS, tmr_iccs, 32, "interval timer control and status", tmr_iccs_bits) }, | |
| { HRDATAD (ICR, tmr_icr, 32, "interval count register") }, | |
| { HRDATAD (NICR, tmr_nicr, 32, "next interval count register") }, | |
| { FLDATAD (INT, tmr_int, 0, "interrupt request") }, | |
| { DRDATAD (TPS, clk_tps, 8, "ticks per second"), REG_NZ + PV_LEFT }, | |
| { HRDATA (INCR, tmr_inc, 32), REG_HIDDEN }, | |
| { NULL } | |
| }; | |
| #define TMR_DB_REG 0x01 /* Register Access */ | |
| #define TMR_DB_TICK 0x02 /* Ticks */ | |
| #define TMR_DB_SCHED 0x04 /* Scheduling */ | |
| #define TMR_DB_INT 0x08 /* Interrupts */ | |
| #define TMR_DB_TODR 0x10 /* TODR */ | |
| DEBTAB tmr_deb[] = { | |
| { "REG", TMR_DB_REG, "Register Access"}, | |
| { "TICK", TMR_DB_TICK, "Ticks"}, | |
| { "SCHED", TMR_DB_SCHED, "Scheduling"}, | |
| { "INT", TMR_DB_INT, "Interrupts"}, | |
| { "TODR", TMR_DB_TODR, "TODR activities"}, | |
| { NULL, 0 } | |
| }; | |
| DEVICE tmr_dev = { | |
| "TMR", &tmr_unit, tmr_reg, NULL, | |
| 1, 0, 0, 0, 0, 0, | |
| NULL, NULL, &tmr_reset, | |
| NULL, NULL, NULL, | |
| NULL, DEV_DEBUG, 0, | |
| tmr_deb, NULL, NULL, NULL, NULL, NULL, | |
| &tmr_description | |
| }; | |
| /* TU58 data structures | |
| td_dev RX device descriptor | |
| td_unit RX unit list | |
| td_reg RX register list | |
| td_mod RX modifier list | |
| */ | |
| UNIT td_unit; | |
| REG td_reg[] = { | |
| { HRDATAD (ECODE, td_regval, 8, "end packet success code") }, | |
| { HRDATAD (BLOCK, td_regval, 8, "current block number") }, | |
| { HRDATAD (RX_CSR, td_regval,16, "input control/status register") }, | |
| { HRDATAD (RX_BUF, td_regval,16, "input buffer register") }, | |
| { HRDATAD (TX_CSR, td_regval,16, "output control/status register") }, | |
| { HRDATAD (TX_BUF, td_regval,16, "output buffer register") }, | |
| { DRDATAD (P_STATE,td_regval, 4, "protocol state"), REG_RO }, | |
| { DRDATAD (O_STATE,td_regval, 4, "output state"), REG_RO }, | |
| { DRDATAD (IBPTR, td_regval, 9, "input buffer pointer") }, | |
| { DRDATAD (OBPTR, td_regval, 9, "output buffer pointer") }, | |
| { DRDATAD (ILEN, td_regval, 9, "input length") }, | |
| { DRDATAD (OLEN, td_regval, 9, "output length") }, | |
| { DRDATAD (TXSIZE, td_regval, 9, "remaining transfer size") }, | |
| { DRDATAD (OFFSET, td_regval, 9, "offset into current transfer") }, | |
| { DRDATAD (CTIME, td_regval,24, "command time"), PV_LEFT }, | |
| { DRDATAD (STIME, td_regval,24, "seek, per block"), PV_LEFT }, | |
| { DRDATAD (XTIME, td_regval,24, "tr set time"), PV_LEFT }, | |
| { DRDATAD (ITIME, td_regval,24, "init time"), PV_LEFT }, | |
| { BRDATAD (IBUF, &td_regval,16, 8, 512, "input buffer"), }, | |
| { BRDATAD (OBUF, &td_regval,16, 8, 512, "output buffer"), }, | |
| { NULL } | |
| }; | |
| MTAB td_mod[] = { | |
| { UNIT_WLK, 0, "write enabled", "WRITEENABLED", NULL, NULL, NULL, "Write enable TU58 drive" }, | |
| { UNIT_WLK, UNIT_WLK, "write locked", "LOCKED", NULL, NULL, NULL, "Write lock TU58 drive" }, | |
| { 0 } | |
| }; | |
| DEVICE td_dev = { | |
| "TD", &td_unit, td_reg, td_mod, | |
| 1, DEV_RDX, 20, 1, DEV_RDX, 8, | |
| NULL, NULL, &td_reset, | |
| NULL, NULL, NULL, | |
| NULL, DEV_DEBUG, 0, td_deb, NULL, NULL, NULL, NULL, NULL, | |
| &td_description | |
| }; | |
| static void set_csi_int (int32 ctlr, t_bool val) | |
| { | |
| if (csi_int ^ val) { | |
| csi_int = val; | |
| sim_debug (TDDEB_INT, &td_dev, "CSI_INT(%d)\n", val); | |
| } | |
| } | |
| static void set_cso_int (int32 ctlr, t_bool val) | |
| { | |
| if (cso_int ^ val) { | |
| cso_int = val; | |
| sim_debug (TDDEB_INT, &td_dev, "CSO_INT(%d)\n", val); | |
| } | |
| } | |
| /* Console storage MxPR routines | |
| csrs_rd/wr input control/status | |
| csrd_rd input buffer | |
| csts_rd/wr output control/status | |
| cstd_wr output buffer | |
| */ | |
| #define ctlr up7 | |
| int32 csrs_rd (void) | |
| { | |
| int32 data; | |
| sim_debug (TDDEB_IRD, &td_dev, "csrs_rd()\n"); | |
| td_rd_i_csr ((CTLR *)td_unit.ctlr, &data); | |
| return data; | |
| } | |
| void csrs_wr (int32 data) | |
| { | |
| sim_debug (TDDEB_IWR, &td_dev, "csrs_wr()\n"); | |
| td_wr_i_csr ((CTLR *)td_unit.ctlr, data); | |
| } | |
| int32 csrd_rd (void) | |
| { | |
| int32 data; | |
| sim_debug (TDDEB_IRD, &td_dev, "csrd_rd()\n"); | |
| td_rd_i_buf ((CTLR *)td_unit.ctlr, &data); | |
| return data; | |
| } | |
| int32 csts_rd (void) | |
| { | |
| int32 data; | |
| sim_debug (TDDEB_ORD, &td_dev, "csts_rd()\n"); | |
| td_rd_o_csr ((CTLR *)td_unit.ctlr, &data); | |
| return data; | |
| } | |
| void csts_wr (int32 data) | |
| { | |
| sim_debug (TDDEB_OWR, &td_dev, "csts_wr()\n"); | |
| td_wr_o_csr ((CTLR *)td_unit.ctlr, data); | |
| } | |
| void cstd_wr (int32 data) | |
| { | |
| sim_debug (TDDEB_OWR, &td_dev, "cstd_wr()\n"); | |
| td_wr_o_buf ((CTLR *)td_unit.ctlr, data); | |
| } | |
| /* Terminal MxPR routines | |
| rxcs_rd/wr input control/status | |
| rxdb_rd input buffer | |
| txcs_rd/wr output control/status | |
| txdb_wr output buffer | |
| */ | |
| int32 rxcs_rd (void) | |
| { | |
| return (tti_csr & RXCS_RD); | |
| } | |
| void rxcs_wr (int32 data) | |
| { | |
| if ((data & CSR_IE) == 0) | |
| tti_int = 0; | |
| else { | |
| if ((tti_csr & (CSR_DONE + CSR_IE)) == CSR_DONE) | |
| tti_int = 1; | |
| } | |
| tti_csr = (tti_csr & ~RXCS_WR) | (data & RXCS_WR); | |
| } | |
| int32 rxdb_rd (void) | |
| { | |
| int32 t = tti_buf; /* char + error */ | |
| if (tti_csr & CSR_DONE) { /* Input pending ? */ | |
| tti_csr = tti_csr & ~CSR_DONE; /* clr done */ | |
| tti_buf = tti_buf & BMASK; /* clr errors */ | |
| tti_int = 0; | |
| sim_activate_after_abs (&tti_unit, tti_unit.wait); /* check soon for more input */ | |
| } | |
| return t; | |
| } | |
| int32 txcs_rd (void) | |
| { | |
| return (tto_csr & TXCS_RD); | |
| } | |
| void txcs_wr (int32 data) | |
| { | |
| if ((data & CSR_IE) == 0) | |
| tto_int = 0; | |
| else { | |
| if ((tto_csr & (CSR_DONE + CSR_IE)) == CSR_DONE) | |
| tto_int = 1; | |
| } | |
| tto_csr = (tto_csr & ~TXCS_WR) | (data & TXCS_WR); | |
| } | |
| void txdb_wr (int32 data) | |
| { | |
| tto_buf = data & WMASK; /* save data */ | |
| tto_csr = tto_csr & ~CSR_DONE; /* clear flag */ | |
| tto_int = 0; /* clear int */ | |
| if (tto_buf & TXDB_SEL) /* console? */ | |
| txdb_misc_wr (tto_buf); | |
| else | |
| sim_activate (&tto_unit, tto_unit.wait); /* no, console terminal */ | |
| } | |
| /* Terminal input service (poll for character) */ | |
| t_stat tti_svc (UNIT *uptr) | |
| { | |
| int32 c; | |
| sim_clock_coschedule (uptr, tmxr_poll); /* continue poll */ | |
| if ((tti_csr & CSR_DONE) && /* input still pending and < 500ms? */ | |
| ((sim_os_msec () - tti_buftime) < 500)) | |
| return SCPE_OK; | |
| if ((c = sim_poll_kbd ()) < SCPE_KFLAG) /* no char or error? */ | |
| return c; | |
| if (c & SCPE_BREAK) /* break? */ | |
| tti_buf = RXDB_ERR | RXDB_FRM; | |
| else | |
| tti_buf = sim_tt_inpcvt (c, TT_GET_MODE (uptr->flags)); | |
| tti_buftime = sim_os_msec (); | |
| uptr->pos = uptr->pos + 1; | |
| tti_csr = tti_csr | CSR_DONE; | |
| if (tti_csr & CSR_IE) | |
| tti_int = 1; | |
| return SCPE_OK; | |
| } | |
| /* Terminal input reset */ | |
| t_stat tti_reset (DEVICE *dptr) | |
| { | |
| tmxr_set_console_units (&tti_unit, &tto_unit); | |
| tti_buf = 0; | |
| tti_csr = 0; | |
| tti_int = 0; | |
| sim_activate (&tti_unit, KBD_WAIT (tti_unit.wait, tmr_poll)); | |
| return SCPE_OK; | |
| } | |
| t_stat tti_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr) | |
| { | |
| fprintf (st, "Console Terminal Input (TTI)\n\n"); | |
| fprintf (st, "The terminal input (TTI) polls the console keyboard for input.\n\n"); | |
| fprint_set_help (st, dptr); | |
| fprint_show_help (st, dptr); | |
| fprint_reg_help (st, dptr); | |
| return SCPE_OK; | |
| } | |
| const char *tti_description (DEVICE *dptr) | |
| { | |
| return "console terminal input"; | |
| } | |
| /* Terminal output service (output character) */ | |
| t_stat tto_svc (UNIT *uptr) | |
| { | |
| int32 c; | |
| t_stat r; | |
| if ((tto_buf & TXDB_SEL) == 0) { /* for console? */ | |
| c = sim_tt_outcvt (tto_buf, TT_GET_MODE (uptr->flags)); | |
| if (c >= 0) { | |
| if ((r = sim_putchar_s (c)) != SCPE_OK) { /* output; error? */ | |
| sim_activate (uptr, uptr->wait); /* retry */ | |
| return ((r == SCPE_STALL)? SCPE_OK: r); /* !stall? report */ | |
| } | |
| } | |
| uptr->pos = uptr->pos + 1; | |
| } | |
| tto_csr = tto_csr | CSR_DONE; | |
| if (tto_csr & CSR_IE) | |
| tto_int = 1; | |
| return SCPE_OK; | |
| } | |
| /* Terminal output reset */ | |
| t_stat tto_reset (DEVICE *dptr) | |
| { | |
| tto_buf = 0; | |
| tto_csr = CSR_DONE; | |
| tto_int = 0; | |
| sim_cancel (&tto_unit); /* deactivate unit */ | |
| return SCPE_OK; | |
| } | |
| t_stat tto_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr) | |
| { | |
| fprintf (st, "Console Terminal Output (TTO)\n\n"); | |
| fprintf (st, "The terminal output (TTO) writes to the simulator console.\n\n"); | |
| fprint_set_help (st, dptr); | |
| fprint_show_help (st, dptr); | |
| fprint_reg_help (st, dptr); | |
| return SCPE_OK; | |
| } | |
| const char *tto_description (DEVICE *dptr) | |
| { | |
| return "console terminal output"; | |
| } | |
| /* Programmable timer | |
| The architected VAX timer, which increments at 1Mhz, cannot be | |
| accurately simulated due to the overhead that would be required | |
| for 1M clock events per second. Instead 1Mhz intervals are | |
| derived from the calibrated instruction execution rate. | |
| If the interval register is read, then its value between events | |
| is interpolated relative to the elapsed instruction count. | |
| */ | |
| int32 iccs_rd (void) | |
| { | |
| sim_debug (TMR_DB_REG, &tmr_dev, "iccs_rd() = 0x%08X\n", tmr_iccs & TMR_CSR_RD); | |
| return tmr_iccs & TMR_CSR_RD; | |
| } | |
| void iccs_wr (int32 val) | |
| { | |
| sim_debug_bits_hdr (TMR_DB_REG, &tmr_dev, "iccs_wr()", tmr_iccs_bits, tmr_iccs, val, TRUE); | |
| if ((val & TMR_CSR_RUN) == 0) { /* clearing run? */ | |
| sim_cancel (&tmr_unit); /* cancel timer */ | |
| if (tmr_iccs & TMR_CSR_RUN) { /* run 1 -> 0? */ | |
| tmr_icr = icr_rd (); /* update itr */ | |
| sim_rtcn_calb (0, TMR_CLK); /* stop timer */ | |
| } | |
| } | |
| if (val & CSR_DONE) /* Interrupt Acked? */ | |
| sim_rtcn_tick_ack (20, TMR_CLK); /* Let timers know */ | |
| tmr_iccs = tmr_iccs & ~(val & TMR_CSR_W1C); /* W1C csr */ | |
| tmr_iccs = (tmr_iccs & ~TMR_CSR_WR) | /* new r/w */ | |
| (val & TMR_CSR_WR); | |
| if (val & TMR_CSR_XFR) /* xfr set? */ | |
| tmr_icr = tmr_nicr; | |
| if (val & TMR_CSR_RUN) { /* run? */ | |
| if (val & TMR_CSR_XFR) /* new tir? */ | |
| sim_cancel (&tmr_unit); /* stop prev */ | |
| if (!sim_is_active (&tmr_unit)) { /* not running? */ | |
| sim_rtcn_init_unit (&tmr_unit, CLK_DELAY, TMR_CLK); /* init timer */ | |
| tmr_sched (tmr_icr); /* activate */ | |
| } | |
| } | |
| else { | |
| if (val & TMR_CSR_XFR) /* xfr set? */ | |
| tmr_icr = tmr_nicr; | |
| if (val & TMR_CSR_SGL) { /* single step? */ | |
| tmr_icr = tmr_icr + 1; /* incr tmr */ | |
| if (tmr_icr == 0) { /* if ovflo, */ | |
| if (tmr_iccs & TMR_CSR_DON) /* done? set err */ | |
| tmr_iccs = tmr_iccs | TMR_CSR_ERR; | |
| else | |
| tmr_iccs = tmr_iccs | TMR_CSR_DON; /* set done */ | |
| if (tmr_iccs & TMR_CSR_IE) { /* ie? */ | |
| tmr_int = 1; /* set int req */ | |
| sim_debug (TMR_DB_INT, &tmr_dev, "tmr_incr() - INT=1\n"); | |
| } | |
| tmr_icr = tmr_nicr; /* reload tir */ | |
| } | |
| } | |
| } | |
| if ((tmr_iccs & (TMR_CSR_DON | TMR_CSR_IE)) != /* update int */ | |
| (TMR_CSR_DON | TMR_CSR_IE)) { | |
| if (tmr_int) { | |
| tmr_int = 0; | |
| sim_debug (TMR_DB_INT, &tmr_dev, "iccs_wr() - INT=0\n"); | |
| } | |
| } | |
| } | |
| int32 icr_rd (void) | |
| { | |
| int32 result; | |
| if (tmr_iccs & TMR_CSR_RUN) { /* running? */ | |
| uint32 usecs_remaining = (uint32)sim_activate_time_usecs (&tmr_unit); | |
| result = (int32)(~usecs_remaining + 1); | |
| } | |
| else | |
| result = (int32)tmr_icr; | |
| sim_debug (TMR_DB_REG, &tmr_dev, "icr_rd() = 0x%08X%s\n", result, (tmr_iccs & TMR_CSR_RUN) ? " - interpolated" : ""); | |
| return result; | |
| } | |
| int32 nicr_rd (void) | |
| { | |
| sim_debug (TMR_DB_REG, &tmr_dev, "nicr_rd() = 0x%08X\n", tmr_nicr); | |
| return tmr_nicr; | |
| } | |
| void nicr_wr (int32 val) | |
| { | |
| sim_debug (TMR_DB_REG, &tmr_dev, "nicr_wr(0x%08X)\n", val); | |
| tmr_nicr = val; | |
| } | |
| /* Interval timer unit service */ | |
| t_stat tmr_svc (UNIT *uptr) | |
| { | |
| sim_debug (TMR_DB_TICK, &tmr_dev, "tmr_svc()\n"); | |
| tmxr_poll = tmr_poll * TMXR_MULT; /* set mux poll */ | |
| if (tmr_iccs & TMR_CSR_DON) /* done? set err */ | |
| tmr_iccs = tmr_iccs | TMR_CSR_ERR; | |
| else | |
| tmr_iccs = tmr_iccs | TMR_CSR_DON; /* set done */ | |
| if (tmr_iccs & TMR_CSR_RUN) /* run? */ | |
| tmr_sched (tmr_nicr); /* reactivate */ | |
| if (tmr_iccs & TMR_CSR_IE) { /* ie? set int req */ | |
| tmr_int = 1; | |
| sim_debug (TMR_DB_INT, &tmr_dev, "tmr_svc() - INT=1\n"); | |
| } | |
| else | |
| tmr_int = 0; | |
| AIO_SET_INTERRUPT_LATENCY(tmr_poll*clk_tps); /* set interrrupt latency */ | |
| return SCPE_OK; | |
| } | |
| /* Timer scheduling */ | |
| void tmr_sched (uint32 nicr) | |
| { | |
| uint32 usecs = (nicr) ? (~nicr + 1) : 0xFFFFFFFF; | |
| clk_tps = 1000000 / usecs; | |
| sim_debug (TMR_DB_SCHED, &tmr_dev, "tmr_sched(nicr=0x%08X-usecs=0x%08X) - tps=%d\n", nicr, usecs, clk_tps); | |
| tmr_poll = sim_rtcn_calb (clk_tps, TMR_CLK); | |
| sim_activate_after (&tmr_unit, usecs); | |
| } | |
| /* 100Hz TODR reset */ | |
| t_stat clk_reset (DEVICE *dptr) | |
| { | |
| if (clk_unit.filebuf == NULL) { /* make sure the TODR is initialized */ | |
| clk_unit.filebuf = calloc(sizeof(TOY), 1); | |
| if (clk_unit.filebuf == NULL) | |
| return SCPE_MEM; | |
| } | |
| todr_resync (); | |
| return SCPE_OK; | |
| } | |
| t_stat clk_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr) | |
| { | |
| fprintf (st, "Real-Time Clock (%s)\n\n", dptr->name); | |
| fprintf (st, "The real-time clock autocalibrates; the clock interval is adjusted up or down\n"); | |
| fprintf (st, "so that the clock tracks actual elapsed time.\n\n"); | |
| fprintf (st, "There are two modes of TODR operation:\n\n"); | |
| fprintf (st, " Default VMS mode. Without initializing the TODR it returns the current\n"); | |
| fprintf (st, " time of year offset which VMS would set the clock to\n"); | |
| fprintf (st, " if VMS knew the correct time (i.e. by manual input).\n"); | |
| fprintf (st, " This is correct almost all the time unless a VMS disk\n"); | |
| fprintf (st, " hadn't been booted from in the current year. This mode\n"); | |
| fprintf (st, " produces strange time results for non VMS OSes on each\n"); | |
| fprintf (st, " system boot.\n"); | |
| fprintf (st, " OS Agnostic mode. This mode behaves precisely like the VAX780 TODR and\n"); | |
| fprintf (st, " works correctly for all OSes. This mode is enabled by\n"); | |
| fprintf (st, " attaching the %s to a battery backup state file for the\n", dptr->name); | |
| fprintf (st, " TOY clock (i.e. sim> attach %s TOY_CLOCK). When\n", dptr->name); | |
| fprintf (st, " operating in OS Agnostic mode, the TODR will initially\n"); | |
| fprintf (st, " start counting from 0 and be adjusted differently when\n"); | |
| fprintf (st, " an OS specifically writes to the TODR. VMS determines\n"); | |
| fprintf (st, " if the TODR currently contains a valid time if the value\n"); | |
| fprintf (st, " it sees is less than about 1 month. If the time isn't\n"); | |
| fprintf (st, " valid VMS will prompt to set the time during the system\n"); | |
| fprintf (st, " boot. While prompting for the time it will wait for an\n"); | |
| fprintf (st, " answer to the prompt for up to the SYSGEN parameter\n"); | |
| fprintf (st, " TIMEPROMPTWAIT seconds. A value of 0 for TIMEPROMPTWAIT\n"); | |
| fprintf (st, " will disable the clock setting prompt.\n"); | |
| fprint_reg_help (st, dptr); | |
| return SCPE_OK; | |
| } | |
| const char *clk_description (DEVICE *dptr) | |
| { | |
| return "time of year clock"; | |
| } | |
| static uint32 sim_byteswap32 (uint32 data) | |
| { | |
| uint8 *bdata = (uint8 *)&data; | |
| uint8 tmp; | |
| tmp = bdata[0]; | |
| bdata[0] = bdata[3]; | |
| bdata[3] = tmp; | |
| tmp = bdata[1]; | |
| bdata[1] = bdata[2]; | |
| bdata[2] = tmp; | |
| return data; | |
| } | |
| /* CLK attach */ | |
| t_stat clk_attach (UNIT *uptr, CONST char *cptr) | |
| { | |
| t_stat r; | |
| uptr->flags = uptr->flags | (UNIT_ATTABLE | UNIT_BUFABLE); | |
| memset (uptr->filebuf, 0, (size_t)uptr->capac); | |
| r = attach_unit (uptr, cptr); | |
| if (r != SCPE_OK) | |
| uptr->flags = uptr->flags & ~(UNIT_ATTABLE | UNIT_BUFABLE); | |
| else { | |
| TOY *toy = (TOY *)uptr->filebuf; | |
| uptr->hwmark = (uint32) uptr->capac; | |
| if ((toy->toy_endian_plus2 < 2) || (toy->toy_endian_plus2 > 3)) | |
| memset (uptr->filebuf, 0, (size_t)uptr->capac); | |
| else { | |
| if (toy->toy_endian_plus2 != sim_end + 2) { /* wrong endian? */ | |
| toy->toy_gmtbase = sim_byteswap32 (toy->toy_gmtbase); | |
| toy->toy_gmtbasemsec = sim_byteswap32 (toy->toy_gmtbasemsec); | |
| } | |
| } | |
| toy->toy_endian_plus2 = sim_end + 2; | |
| todr_resync (); | |
| } | |
| return r; | |
| } | |
| /* CLK detach */ | |
| t_stat clk_detach (UNIT *uptr) | |
| { | |
| t_stat r; | |
| r = detach_unit (uptr); | |
| if ((uptr->flags & UNIT_ATT) == 0) | |
| uptr->flags = uptr->flags & ~(UNIT_ATTABLE | UNIT_BUFABLE); | |
| return r; | |
| } | |
| /* Interval timer reset */ | |
| t_stat tmr_reset (DEVICE *dptr) | |
| { | |
| tmr_poll = sim_rtcn_init_unit (&tmr_unit, CLK_DELAY, TMR_CLK); /* init timer */ | |
| tmxr_poll = tmr_poll * TMXR_MULT; /* set mux poll */ | |
| tmr_iccs = 0; | |
| tmr_nicr = 0; | |
| tmr_int = 0; | |
| sim_cancel (&tmr_unit); /* cancel timer */ | |
| return SCPE_OK; | |
| } | |
| const char *tmr_description (DEVICE *dptr) | |
| { | |
| return "interval timer"; | |
| } | |
| /* TODR routines */ | |
| int32 todr_rd (void) | |
| { | |
| TOY *toy = (TOY *)clk_unit.filebuf; | |
| struct timespec base, now, val; | |
| /* Maximum number of seconds which can be represented as 10ms ticks | |
| in the 32bit TODR. This is the 33bit value 0x100000000/100 to get seconds */ | |
| #define TOY_MAX_SECS (0x40000000/25) | |
| sim_rtcn_get_time(&now, TMR_CLK); /* get curr time */ | |
| base.tv_sec = toy->toy_gmtbase; | |
| base.tv_nsec = toy->toy_gmtbasemsec * 1000000; | |
| sim_timespec_diff (&val, &now, &base); | |
| if ((val.tv_sec >= TOY_MAX_SECS) || (!toy->toy_gmtbase))/* todr overflowed? */ | |
| return 0; /* stop counting */ | |
| sim_debug (TMR_DB_TODR, &tmr_dev, "todr_rd() - TODR=0x%X\n", (int32)(val.tv_sec*100 + val.tv_nsec/10000000)); | |
| return (int32)(val.tv_sec*100 + val.tv_nsec/10000000); /* 100hz Clock Ticks */ | |
| } | |
| void todr_wr (int32 data) | |
| { | |
| TOY *toy = (TOY *)clk_unit.filebuf; | |
| struct timespec now, val, base; | |
| sim_debug (TMR_DB_TODR, &tmr_dev, "todr_wr(0x%X)\n", data); | |
| if (data) { | |
| /* Save the GMT time when set value was not 0 to record the base for | |
| future read operations in "battery backed-up" state */ | |
| sim_rtcn_get_time(&now, TMR_CLK); /* get curr time */ | |
| val.tv_sec = ((uint32)data) / 100; | |
| val.tv_nsec = (((uint32)data) % 100) * 10000000; | |
| sim_timespec_diff (&base, &now, &val); /* base = now - data */ | |
| toy->toy_gmtbase = (uint32)base.tv_sec; | |
| toy->toy_gmtbasemsec = base.tv_nsec/1000000; | |
| } | |
| else { /* stop the clock */ | |
| toy->toy_gmtbase = 0; | |
| toy->toy_gmtbasemsec = 0; | |
| } | |
| } | |
| t_stat todr_resync (void) | |
| { | |
| TOY *toy = (TOY *)clk_unit.filebuf; | |
| if (clk_unit.flags & UNIT_ATT) { /* Attached means behave like real VAX780 */ | |
| if (!toy->toy_gmtbase) /* Never set? */ | |
| todr_wr (0); /* Start ticking from 0 */ | |
| } | |
| else { /* Not-Attached means */ | |
| uint32 base; /* behave like simh VMS default */ | |
| time_t curr; | |
| struct tm *ctm; | |
| curr = time (NULL); /* get curr time */ | |
| if (curr == (time_t) -1) /* error? */ | |
| return SCPE_NOFNC; | |
| ctm = localtime (&curr); /* decompose */ | |
| if (ctm == NULL) /* error? */ | |
| return SCPE_NOFNC; | |
| base = (((((ctm->tm_yday * 24) + /* sec since 1-Jan */ | |
| ctm->tm_hour) * 60) + | |
| ctm->tm_min) * 60) + | |
| ctm->tm_sec; | |
| todr_wr ((base * 100) + 0x10000000); /* use VMS form */ | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Console write, txdb<11:8> != 0 (console unit) */ | |
| t_stat txdb_misc_wr (int32 data) | |
| { | |
| int32 sel = TXDB_GETSEL (data); /* get selection */ | |
| sim_activate (&tto_unit, tto_unit.wait); /* set up timeout */ | |
| if (sel == TXDB_MISC) { /* misc function? */ | |
| switch (data & MISC_MASK) { /* case on function */ | |
| case MISC_CLWS: | |
| case MISC_CLCS: | |
| break; | |
| case MISC_SWDN: | |
| ABORT (STOP_SWDN); | |
| break; | |
| case MISC_BOOT: | |
| con_halt (0, 0); /* set up reboot */ | |
| break; | |
| } | |
| } | |
| return SCPE_OK; | |
| } | |
| /* Reset */ | |
| t_stat td_reset (DEVICE *dptr) | |
| { | |
| return td_connect_console_device (&td_dev, set_csi_int, set_cso_int); | |
| } | |
| const char *td_description (DEVICE *dptr) | |
| { | |
| return "Console TU58 cartridge"; | |
| } |