| /* pdp18b_defs.h: 18b PDP simulator definitions | |
| Copyright (c) 1993-2016, 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. | |
| 17-Mar-16 PLB Start GRAPHICS-2 support for PDP-7 UNIX | |
| 10-Mar-16 RMS Added 3-cycle databreak set/show routines | |
| 26-Feb-16 RMS Added RB09 to PDP-7 for Unix "v0" and RM09 to PDP-9 | |
| 13-Sep-15 RMS Added DR15C | |
| 18-Apr-12 RMS Added clk_cosched prototype | |
| 22-May-10 RMS Added check for 64b definitions | |
| 30-Oct-06 RMS Added infinite loop stop | |
| 14-Jan-04 RMS Revised IO device call interface | |
| 18-Oct-03 RMS Added DECtape off reel message | |
| 18-Jul-03 RMS Added FP15 support | |
| Added XVM support | |
| Added EAE option for PDP-4 | |
| 25-Apr-03 RMS Revised for extended file support | |
| 04-Feb-03 RMS Added RB09, LP09 support | |
| 22-Nov-02 RMS Added PDP-4 drum support | |
| 05-Oct-02 RMS Added DIB structure | |
| 25-Jul-02 RMS Added PDP-4 DECtape support | |
| 10-Feb-02 RMS Added PDP-7 DECtape support | |
| 25-Nov-01 RMS Revised interrupt structure | |
| 27-May-01 RMS Added second Teletype support | |
| 21-Jan-01 RMS Added DECtape support | |
| 14-Apr-99 RMS Changed t_addr to unsigned | |
| 02-Jan-96 RMS Added fixed head and moving head disks | |
| 31-Dec-95 RMS Added memory management | |
| 19-Mar-95 RMS Added dynamic memory size | |
| The author gratefully acknowledges the help of Craig St. Clair and | |
| Deb Tevonian in locating archival material about the 18b PDP's, and of | |
| Al Kossow and Max Burnet in making documentation and software available. | |
| */ | |
| #ifndef PDP18B_DEFS_H_ | |
| #define PDP18B_DEFS_H_ 0 | |
| #include "sim_defs.h" /* simulator defns */ | |
| /* Rename of global PC variable to avoid namespace conflicts on some platforms */ | |
| #define PC PC_Global | |
| #if defined(USE_INT64) || defined(USE_ADDR64) | |
| #error "18b PDP's do not support 64b values!" | |
| #endif | |
| /* Models: only one should be defined | |
| model memory CPU options I/O options | |
| PDP4 8K Type 18 EAE Type 65 KSR-28 Teletype (Baudot) | |
| ??Type 16 mem extension integral paper tape reader | |
| Type 75 paper tape punch | |
| integral real time clock | |
| Type 62 line printer (Hollerith) | |
| Type 550/555 DECtape | |
| Type 24 serial drum | |
| PDP7 32K Type 177 EAE Type 649 KSR-33 Teletype | |
| Type 148 mem extension Type 444 paper tape reader | |
| Type 75 paper tape punch | |
| integral real time clock | |
| Type 647B line printer (sixbit) | |
| Type 550/555 DECtape | |
| Type 24 serial drum | |
| RB09 fixed head disk (Unix V0 only) | |
| Bell Labs GRAPHICS-2 (Unix V0 only) | |
| PDP9 32K KE09A EAE KSR-33 Teletype | |
| KF09A auto pri intr PC09A paper tape reader and punch | |
| KG09B mem extension integral real time clock | |
| KP09A power detection Type 647D/E line printer (sixbit) | |
| KX09A mem protection LP09 line printer (ASCII) | |
| RF09/RS09 fixed head disk | |
| RB09 fixed head disk | |
| RM09 drum | |
| TC59 magnetic tape | |
| TC02/TU55 DECtape | |
| LT09A additional Teletypes | |
| PDP15 128K KE15 EAE KSR-35 Teletype | |
| KA15 auto pri intr PC15 paper tape reader and punch | |
| KF15 power detection KW15 real time clock | |
| KM15 mem protection LP09 line printer | |
| KT15 mem relocation LP15 line printer | |
| FP15 floating point RP15 disk pack | |
| XVM option RF15/RF09 fixed head disk | |
| TC59D magnetic tape | |
| TC15/TU56 DECtape | |
| LT15/LT19 additional Teletypes | |
| DR15C parallel interface to UC15 | |
| ??Indicates not implemented. The PDP-4 manual refers to a memory | |
| ??extension control; there is no documentation on it. | |
| */ | |
| #if !defined (PDP4) && !defined (PDP7) && !defined (PDP9) && !defined (PDP15) | |
| #define PDP15 0 /* default to PDP-15 */ | |
| #endif | |
| /* Simulator stop codes */ | |
| #define STOP_RSRV 1 /* must be 1 */ | |
| #define STOP_HALT 2 /* HALT */ | |
| #define STOP_IBKPT 3 /* breakpoint */ | |
| #define STOP_XCT 4 /* nested XCT's */ | |
| #define STOP_API 5 /* invalid API int */ | |
| #define STOP_NONSTD 6 /* non-std dev num */ | |
| #define STOP_MME 7 /* mem mgt error */ | |
| #define STOP_FPDIS 8 /* fp inst, fpp disabled */ | |
| #define STOP_DTOFF 9 /* DECtape off reel */ | |
| #define STOP_LOOP 10 /* infinite loop */ | |
| /* Peripheral configuration */ | |
| #if defined (PDP4) | |
| #define ADDRSIZE 13 | |
| #define KSR28 0 /* Baudot terminal */ | |
| #define TYPE62 0 /* Hollerith printer */ | |
| #define TYPE550 0 /* DECtape */ | |
| #define DRM 0 /* drum */ | |
| #elif defined (PDP7) | |
| #define ADDRSIZE 15 | |
| #define TYPE647 0 /* sixbit printer */ | |
| #define TYPE550 0 /* DECtape */ | |
| #define DRM 0 /* drum */ | |
| #define RB 0 /* fixed head disk */ | |
| #define GRAPHICS2 0 /* BTL display */ | |
| #elif defined (PDP9) | |
| #define ADDRSIZE 15 | |
| #define TYPE647 0 /* sixbit printer */ | |
| #define LP09 0 /* ASCII printer */ | |
| #define RB 0 /* fixed head disk */ | |
| #define RF 0 /* fixed head disk */ | |
| #define DRM 0 /* drum */ | |
| #define MTA 0 /* magtape */ | |
| #define TC02 0 /* DECtape */ | |
| #define TTY1 4 /* second Teletype(s) */ | |
| #define BRMASK 0076000 /* bounds mask */ | |
| #elif defined (PDP15) | |
| #define ADDRSIZE 17 | |
| #define LP09 0 /* ASCII printer */ | |
| #define LP15 0 /* DMA printer */ | |
| #define RF 0 /* fixed head disk */ | |
| #define RP 0 /* disk pack */ | |
| #define MTA 0 /* magtape */ | |
| #define TC02 0 /* DECtape */ | |
| #define TTY1 16 /* second Teletype(s) */ | |
| #define BRMASK 0377400 /* bounds mask */ | |
| #define BRMASK_XVM 0777400 /* bounds mask, XVM */ | |
| #endif | |
| /* Memory */ | |
| #define AMASK ((1 << ADDRSIZE) - 1) /* address mask */ | |
| #define IAMASK 077777 /* ind address mask */ | |
| #define BLKMASK (AMASK & (~IAMASK)) /* block mask */ | |
| #define MAXMEMSIZE (1 << ADDRSIZE) /* max memory size */ | |
| #define MEMSIZE (cpu_unit.capac) /* actual memory size */ | |
| #define MEM_ADDR_OK(x) (((uint32) (x)) < MEMSIZE) | |
| /* Instructions */ | |
| #define I_V_OP 14 /* opcode */ | |
| #define I_M_OP 017 | |
| #define I_V_IND 13 /* indirect */ | |
| #define I_V_IDX 12 /* index */ | |
| #define I_IND (1 << I_V_IND) | |
| #define I_IDX (1 << I_V_IDX) | |
| #define B_DAMASK 017777 /* bank mode address */ | |
| #define B_EPCMASK (AMASK & ~B_DAMASK) | |
| #define P_DAMASK 007777 /* page mode address */ | |
| #define P_EPCMASK (AMASK & ~P_DAMASK) | |
| /* Memory cycles */ | |
| #define FE 0 | |
| #define DF 1 | |
| #define RD 2 | |
| #define WR 3 | |
| /* Memory status codes */ | |
| #define MM_OK 0 | |
| #define MM_ERR 1 | |
| /* Memory management relocation checks (PDP-15 KT15 and XVM only) */ | |
| #define REL_C -1 /* console */ | |
| #define REL_R 0 /* read */ | |
| #define REL_W 1 /* write */ | |
| /* Architectural constants */ | |
| #define DMASK 0777777 /* data mask */ | |
| #define LINK (DMASK + 1) /* link */ | |
| #define LACMASK (LINK | DMASK) /* link + data */ | |
| #define SIGN 0400000 /* sign bit */ | |
| #define OP_JMS 0100000 /* JMS */ | |
| #define OP_JMP 0600000 /* JMP */ | |
| #define OP_HLT 0740040 /* HLT */ | |
| /* IOT subroutine return codes */ | |
| #define IOT_V_SKP 18 /* skip */ | |
| #define IOT_V_REASON 19 /* reason */ | |
| #define IOT_SKP (1 << IOT_V_SKP) | |
| #define IOT_REASON (1 << IOT_V_REASON) | |
| #define IORETURN(f,v) ((f)? (v): SCPE_OK) /* stop on error */ | |
| /* PC change queue */ | |
| #define PCQ_SIZE 64 /* must be 2**n */ | |
| #define PCQ_MASK (PCQ_SIZE - 1) | |
| #define PCQ_ENTRY pcq[pcq_p = (pcq_p - 1) & PCQ_MASK] = PC | |
| /* XVM memory management registers */ | |
| #define MM_RDIS 0400000 /* reloc disabled */ | |
| #define MM_V_GM 15 /* G mode */ | |
| #define MM_M_GM 03 | |
| #define MM_GM (MM_M_GM << MM_V_GM) | |
| #define MM_G_W0 0077777 /* virt addr width */ | |
| #define MM_G_W1 0177777 | |
| #define MM_G_W2 0777777 | |
| #define MM_G_W3 0377777 | |
| #define MM_G_B0 0060000 /* SAS base */ | |
| #define MM_G_B1 0160000 | |
| #define MM_G_B2 0760000 | |
| #define MM_G_B3 0360000 | |
| #define MM_UIOT 0040000 /* user mode IOT's */ | |
| #define MM_WP 0020000 /* share write prot */ | |
| #define MM_SH 0010000 /* share enabled */ | |
| #define MM_V_SLR 10 /* segment length reg */ | |
| #define MM_M_SLR 03 | |
| #define MM_SLR_L0 001000 /* SAS length */ | |
| #define MM_SLR_L1 002000 | |
| #define MM_SLR_L2 010000 | |
| #define MM_SLR_L3 020000 | |
| #define MM_SBR_MASK 01777 /* share base reg */ | |
| #define MM_GETGM(x) (((x) >> MM_V_GM) & MM_M_GM) | |
| #define MM_GETSLR(x) (((x) >> MM_V_SLR) & MM_M_SLR) | |
| /* Device information block */ | |
| #define DEV_MAXBLK 8 /* max dev block */ | |
| #define DEV_MAX 64 /* total devices */ | |
| typedef struct { | |
| uint32 dev; /* base dev number */ | |
| uint32 num; /* number of slots */ | |
| int32 (*iors)(void); /* IORS responder */ | |
| int32 (*dsp[DEV_MAXBLK])(int32 dev, int32 pulse, int32 dat); | |
| } DIB; | |
| /* Standard device numbers */ | |
| #define DEV_PTR 001 /* paper tape reader */ | |
| #define DEV_PTP 002 /* paper tape punch */ | |
| #define DEV_TTI 003 /* console input */ | |
| #define DEV_TTO 004 /* console output */ | |
| #define DEV_TTI1 041 /* extra terminals */ | |
| #define DEV_TTO1 040 | |
| #define DEV_DRM 060 /* drum */ | |
| #define DEV_DR 060 /* DR15 */ | |
| #define DEV_RP 063 /* RP15 */ | |
| #define DEV_LPT 065 /* line printer */ | |
| #define DEV_RF 070 /* RF09 */ | |
| #define DEV_RB 071 /* RB09 */ | |
| #define DEV_MT 073 /* magtape */ | |
| #define DEV_DTA 075 /* dectape */ | |
| #ifdef GRAPHICS2 | |
| /* Bell Telephone Labs GRAPHICS-2 Display System ("as large as the PDP-7") | |
| * Used by PDP-7 UNIX as a "Glass TTY" | |
| */ | |
| #define DEV_G2D1 005 /* Display Ctrl 1 */ | |
| #define DEV_G2D 006 /* (Display Ctrl 2) */ | |
| #define DEV_G2LP 007 /* (Light Pen) */ | |
| #define DEV_G2DS 010 /* (Display Status) */ | |
| #define DEV_G2D3 014 /* (Display Ctrl 3) */ | |
| #define DEV_G2D4 034 /* (Display Ctrl 4) */ | |
| #define DEV_G2UNK 042 /* (???) */ | |
| #define DEV_G2KB 043 /* Keyboard */ | |
| #define DEV_G2BB 044 /* Button Box */ | |
| #define DEV_G2IM 045 /* (PDP7 int. mask) */ | |
| /* PDP-7/9 to 201A Data Phone Interface | |
| * (status bits retrieved with G2DS IOT) | |
| * used for UNIX to GCOS Remote Job Entry | |
| */ | |
| #define DEV_DP 047 /* (Data Phone) */ | |
| #endif | |
| /* Interrupt system | |
| The interrupt system can be modelled on either the flag driven system | |
| of the PDP-4 and PDP-7 or the API driven system of the PDP-9 and PDP-15. | |
| If flag based, API is hard to implement; if API based, IORS requires | |
| extra code for implementation. I've chosen an API based model. | |
| API channel Device API priority Notes | |
| 00 software 4 4 | |
| 01 software 5 5 | |
| 02 software 6 6 | |
| 03 software 7 7 | |
| 04 TC02/TC15 1 | |
| 05 TC59D 1 | |
| 06 drum 1 PDP-9 only | |
| 07 RB09 1 PDP-9 only | |
| 10 paper tape reader 2 | |
| 11 real time clock 3 | |
| 12 power fail 0 | |
| 13 memory parity 0 | |
| 14 display 2 | |
| 15 card reader 2 | |
| 16 line printer 2 | |
| 17 A/D converter 0 | |
| 20 interprocessor buffer 3 | |
| 21 360 link 3 PDP-9 only | |
| 22 data phone 2 PDP-15 only | |
| 23 RF09/RF15 1 | |
| 24 RP15 1 PDP-15 only | |
| 25 plotter 1 PDP-15 only | |
| 26 - | |
| 27 - | |
| 30 - | |
| 31 - | |
| 32 - | |
| 33 - | |
| 34 LT15 TTO 3 PDP-15 only | |
| 35 LT15 TTI 3 PDP-15 only | |
| 36 - | |
| 37 - | |
| The DR15C uses four API channels that are assigned by software. | |
| On the PDP-9, any API level active masks PI, and PI does not mask API. | |
| On the PDP-15, only the hardware API levels active mask PI, and PI masks | |
| the API software levels. */ | |
| #define API_ML0 0200 /* API masks: level 0 */ | |
| #define API_ML1 0100 | |
| #define API_ML2 0040 | |
| #define API_ML3 0020 | |
| #define API_ML4 0010 | |
| #define API_ML5 0004 | |
| #define API_ML6 0002 | |
| #define API_ML7 0001 /* level 7 */ | |
| #if defined (PDP9) /* levels which mask PI */ | |
| #define API_MASKPI (API_ML0|API_ML1|API_ML2|API_ML3|API_ML4|API_ML5|API_ML6|API_ML7) | |
| #else | |
| #define API_MASKPI (API_ML0|API_ML1|API_ML2|API_ML3) | |
| #endif | |
| #define API_HLVL 4 /* hwre levels */ | |
| #define ACH_SWRE 040 /* swre int vec */ | |
| /* API level 0 */ | |
| #define INT_V_PWRFL 0 /* powerfail */ | |
| #define INT_PWRFL (1 << INT_V_PWRFL) | |
| #define API_PWRFL 0 | |
| #define ACH_PWRFL 052 | |
| /* API level 1 */ | |
| #define INT_V_DTA 0 /* DECtape */ | |
| #define INT_V_MTA 1 /* magtape */ | |
| #define INT_V_DRM 2 /* drum */ | |
| #define INT_V_RF 3 /* fixed head disk */ | |
| #define INT_V_RP 4 /* disk pack */ | |
| #define INT_V_RB 5 /* RB disk */ | |
| #define INT_DTA (1 << INT_V_DTA) | |
| #define INT_MTA (1 << INT_V_MTA) | |
| #define INT_DRM (1 << INT_V_DRM) | |
| #define INT_RF (1 << INT_V_RF) | |
| #define INT_RP (1 << INT_V_RP) | |
| #define INT_RB (1 << INT_V_RB) | |
| #define API_DTA 1 | |
| #define API_MTA 1 | |
| #define API_DRM 1 | |
| #define API_RF 1 | |
| #define API_RP 1 | |
| #define API_RB 1 | |
| #define ACH_DTA 044 | |
| #define ACH_MTA 045 | |
| #define ACH_DRM 046 | |
| #define ACH_RB 047 | |
| #define ACH_RF 063 | |
| #define ACH_RP 064 | |
| /* API level 2 */ | |
| #define INT_V_PTR 0 /* paper tape reader */ | |
| #define INT_V_LPT 1 /* line printer */ | |
| #define INT_V_LPTSPC 2 /* line printer spc */ | |
| #define INT_PTR (1 << INT_V_PTR) | |
| #define INT_LPT (1 << INT_V_LPT) | |
| #define INT_LPTSPC (1 << INT_V_LPTSPC) | |
| #define API_PTR 2 | |
| #define API_LPT 2 | |
| #define API_LPTSPC 2 | |
| #define ACH_PTR 050 | |
| #define ACH_LPT 056 | |
| /* API level 3 */ | |
| #define INT_V_CLK 0 /* clock */ | |
| #define INT_V_TTI1 1 /* LT15 keyboard */ | |
| #define INT_V_TTO1 2 /* LT15 output */ | |
| #define INT_CLK (1 << INT_V_CLK) | |
| #define INT_TTI1 (1 << INT_V_TTI1) | |
| #define INT_TTO1 (1 << INT_V_TTO1) | |
| #define API_CLK 3 | |
| #define API_TTI1 3 | |
| #define API_TTO1 3 | |
| #define ACH_CLK 051 | |
| #define ACH_TTI1 075 | |
| #define ACH_TTO1 074 | |
| /* PI level */ | |
| #define INT_V_TTI 0 /* console keyboard */ | |
| #define INT_V_TTO 1 /* console output */ | |
| #define INT_V_PTP 2 /* paper tape punch */ | |
| #define INT_V_G2 3 /* BTL GRAPHICS-2 */ | |
| #define INT_TTI (1 << INT_V_TTI) | |
| #define INT_TTO (1 << INT_V_TTO) | |
| #define INT_PTP (1 << INT_V_PTP) | |
| #define API_TTI 4 /* PI level */ | |
| #define API_TTO 4 | |
| #define API_PTP 4 | |
| #ifdef GRAPHICS2 | |
| /* | |
| * A PDP-9 version existed, | |
| * but we're only interested simulating a PDP-7 without API | |
| */ | |
| #define INT_G2 (1 << INT_V_G2) | |
| #define API_G2 4 | |
| #endif | |
| /* Interrupt macros */ | |
| #define SET_INT(dv) int_hwre[API_##dv] = int_hwre[API_##dv] | INT_##dv | |
| #define CLR_INT(dv) int_hwre[API_##dv] = int_hwre[API_##dv] & ~INT_##dv | |
| #define TST_INT(dv) (int_hwre[API_##dv] & INT_##dv) | |
| /* The DR15C uses the same relative bit position in all four interrupt levels. | |
| This allows software to have a single definition for the interrupt bit position, | |
| regardless of level. The standard macros cannot be used. */ | |
| #define INT_V_DR 7 /* to left of all */ | |
| #define INT_DR (1 << INT_V_DR) | |
| #define API_DR0 0 | |
| #define API_DR1 1 | |
| #define API_DR2 2 | |
| #define API_DR3 3 | |
| /* I/O status flags for the IORS instruction | |
| bit PDP-4 PDP-7 PDP-9 PDP-15 | |
| 0 intr on intr on intr on intr on | |
| 1 tape rdr flag* tape rdr flag* tape rdr flag* tape rdr flag* | |
| 2 tape pun flag* tape pun flag* tape pun flag* tape pun flag* | |
| 3 keyboard flag* keyboard flag* keyboard flag* keyboard flag* | |
| 4 type out flag* type out flag* type out flag* type out flag* | |
| 5 display flag* display flag* light pen flag* light pen flag* | |
| 6 clk ovflo flag* clk ovflo flag* clk ovflo flag* clk ovflo flag* | |
| 7 clk enable flag clk enable flag clk enable flag clk enable flag | |
| 8 mag tape flag* mag tape flag* tape rdr empty* tape rdr empty* | |
| 9 card rdr col* * tape pun empty tape pun empty | |
| 10 card rdr ~busy DECtape flag* DECtape flag* | |
| 11 card rdr error magtape flag* magtape flag* | |
| 12 card rdr EOF disk pack flag* | |
| 13 card pun row* DECdisk flag* DECdisk flag* | |
| 14 card pun error lpt flag* | |
| 15 lpt flag* lpt flag* lpt flag* | |
| 16 lpt space flag* lpt error flag lpt error flag | |
| 17 drum flag* drum flag* | |
| */ | |
| #define IOS_ION 0400000 /* interrupts on */ | |
| #define IOS_PTR 0200000 /* tape reader */ | |
| #define IOS_PTP 0100000 /* tape punch */ | |
| #define IOS_TTI 0040000 /* keyboard */ | |
| #define IOS_TTO 0020000 /* terminal */ | |
| #define IOS_LPEN 0010000 /* light pen */ | |
| #define IOS_CLK 0004000 /* clock */ | |
| #define IOS_CLKON 0002000 /* clock enable */ | |
| #define IOS_DTA 0000200 /* DECtape */ | |
| #define IOS_RP 0000040 /* disk pack */ | |
| #define IOS_RF 0000020 /* fixed head disk */ | |
| #define IOS_DRM 0000001 /* drum */ | |
| #if defined (PDP4) || defined (PDP7) | |
| #define IOS_MTA 0001000 /* magtape */ | |
| #define IOS_LPT 0000004 /* line printer */ | |
| #define IOS_LPT1 0000002 /* line printer stat */ | |
| #elif defined (PDP9) | |
| #define IOS_PTRERR 0001000 /* reader empty */ | |
| #define IOS_PTPERR 0000400 /* punch empty */ | |
| #define IOS_MTA 0000100 /* magtape */ | |
| #define IOS_LPT 0000004 /* line printer */ | |
| #define IOS_LPT1 0000002 /* line printer stat */ | |
| #elif defined (PDP15) | |
| #define IOS_PTRERR 0001000 /* reader empty */ | |
| #define IOS_PTPERR 0000400 /* punch empty */ | |
| #define IOS_MTA 0000100 /* magtape */ | |
| #define IOS_LPT 0000010 /* line printer */ | |
| #define IOS_LPT1 0000000 /* not used */ | |
| #endif | |
| /* Function prototypes */ | |
| t_stat set_devno (UNIT *uptr, int32 val, char *cptr, void *desc); | |
| t_stat show_devno (FILE *st, UNIT *uptr, int32 val, void *desc); | |
| t_stat set_3cyc_reg (UNIT *uptr, int32 val, char *cptr, void *desc); | |
| t_stat show_3cyc_reg (FILE *st, UNIT *uptr, int32 val, void *desc); | |
| #endif |