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pro_reg.c
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pro_reg.c
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/* pro_reg.c: General PRO registers
Copyright (c) 1997-2003, Tarik Isani (xhomer@isani.org)
This file is part of Xhomer.
Xhomer is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
Xhomer is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Xhomer; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef PRO
#include "pdp11_defs.h"
#include "sim_defs.h" /* For sim_gtime() */
extern int PC; /* from pdp11_cpu */
int pro_led;
int pro_csr;
#ifndef BUILTIN_ROMS
unsigned short ROM[8192];
unsigned short IDROM[32];
#else
#include "id.h"
#include "pro350.h"
#endif
unsigned short BATRAM[50];
/* pro_rom.c: PRO 16KB Boot/diagnostic ROM, I/O address 17730000-17767777 */
int rom_rd (int *data, int pa, int access)
{
*data = ROM[(pa-017730000) >> 1];
return SCPE_OK;
}
int rom_wr (int data, int pa, int access)
{
return SCPE_NXM; /* ??? invalid access */
}
/* Standard I/O dispatch routine, many addresses */
int reg_rd (int *data, int pa, int access)
{
#ifdef IOTRACE
if (iotfptr)
{
fprintf(iotfptr, "%10.0lf ",sim_gtime());
fprintf(iotfptr, "%6o ",PC);
}
#endif
if ((pa>=017773600) && (pa<=017773677)) /* ID PROM */
*data = IDROM[(pa-017773600) >> 1];
else if ((pa>=017773034) && (pa<=017773177)) /* Battery backed RAM */
*data = BATRAM[(pa-017773034) >> 1];
else if ((pa>=017773200) && (pa<=017773213)) /* Int controllers */
*data = pro_int_rd(pa);
else
switch (pa & 017777776)
{
case 017773000:
case 017773002:
case 017773004:
case 017773006:
case 017773010:
case 017773012:
case 017773014:
case 017773016:
case 017773020:
case 017773022:
case 017773024:
case 017773026:
case 017773030:
case 017773032:
*data = pro_clk_rd(pa); /* clock */
break;
case 017773300:
case 017773302:
case 017773304:
case 017773306:
case 017773310:
case 017773312:
case 017773314:
*data = pro_com_rd(pa); /* communication port */
break;
case 017773400:
case 017773402:
case 017773404:
case 017773406:
*data = pro_ptr_rd(pa); /* printer controller */
break;
case 017773500:
case 017773502:
case 017773504:
case 017773506:
*data = pro_kb_rd(pa); /* keyboard controller */
break;
case 017773700:
*data = pro_csr;
break;
case 017773702:
*data = PRO_OMP; /* Option module present */
break;
case 017773704:
*data = pro_led;
break;
#if PRO_RD_PRESENT
case 017774000:
case 017774004:
case 017774006:
case 017774010:
case 017774012:
case 017774014:
case 017774016:
case 017774020:
*data = pro_rd_rd(pa);
break;
#endif
#if PRO_RX_PRESENT
case 017774200:
case 017774204:
case 017774206:
case 017774210:
case 017774212:
case 017774214:
case 017774216:
case 017774220:
case 017774222:
case 017774224:
*data = pro_rx_rd(pa);
break;
#endif
#if PRO_VID_PRESENT
case 017774400:
case 017774404:
case 017774406:
case 017774414:
case 017774416:
case 017774420:
/* EBO */
case 017774410:
#if PRO_EBO_PRESENT
case 017774600:
#endif
*data = pro_vid_rd(pa);
break;
#endif
#if PRO_MEM_PRESENT
case 017775000:
case 017775004:
case 017775006:
*data = pro_mem_rd(pa); /* memory expansion */
break;
#endif
/* Option board 6 not installed
case 017775200:
break;
*/
case 017777560:
case 017777562:
case 017777564:
case 017777566:
*data = pro_maint_rd(pa); /* maintenance terminal interface */
break;
case 017777750:
/* Processor maintenance register */
*data = 0;
break;
default:
*data = PRO_NOREG;
#ifdef IOTRACE
if (iotfptr)
{
fprintf(iotfptr, "*R %o\n",pa);
fflush(iotfptr);
}
#endif
return SCPE_NXM;
}
#ifdef IOTRACE
if (iotfptr)
{
fprintf(iotfptr, " R %o, %o\n",pa,*data);
fflush(iotfptr);
}
#endif
return SCPE_OK;
}
int reg_wr (int data, int pa, int access)
{
/* XXX Writes to ID PROM *should* return NXM */
#ifdef IOTRACE
if (iotfptr)
{
fprintf(iotfptr, "%10.0lf ",sim_gtime());
fprintf(iotfptr, "%6o",PC);
if (access == WRITEB)
fprintf(iotfptr, "B");
else
fprintf(iotfptr, " ");
}
#endif
if ((pa>=017773034) && (pa<=017773177)) /* Battery backed RAM */
WRITE_WB(BATRAM[(pa-017773034) >> 1], PRO_BATRAM_W, access);
else if ((pa>=017773200) && (pa<=017773213)) /* Int controllers */
pro_int_wr(data, pa, access);
else
switch (pa & 017777776)
{
case 017773000:
case 017773002:
case 017773004:
case 017773006:
case 017773010:
case 017773012:
case 017773014:
case 017773016:
case 017773020:
case 017773022:
case 017773024:
case 017773026:
case 017773030:
case 017773032:
pro_clk_wr(data, pa, access);
break;
case 017773300:
case 017773302:
case 017773304:
case 017773306:
case 017773310:
case 017773312:
case 017773314:
pro_com_wr(data, pa, access);
break;
case 017773400:
case 017773402:
case 017773404:
case 017773406:
pro_ptr_wr(data, pa, access);
break;
case 017773500:
case 017773502:
case 017773504:
case 017773506:
pro_kb_wr(data, pa, access);
break;
case 017773700:
WRITE_WB(pro_csr, PRO_CSR_W, access);
break;
case 017773704:
WRITE_WB(pro_led, PRO_LED_W, access);
break;
#if PRO_RD_PRESENT
case 017774002:
case 017774004:
case 017774006:
case 017774010:
case 017774012:
case 017774014:
case 017774016:
case 017774020:
pro_rd_wr(data, pa, access);
break;
#endif
#if PRO_RX_PRESENT
case 017774202:
case 017774204:
case 017774206:
case 017774210:
case 017774212:
case 017774216:
case 017774220:
case 017774222:
case 017774224:
case 017774226:
pro_rx_wr(data, pa, access);
break;
#endif
#if PRO_VID_PRESENT
case 017774402:
case 017774404:
case 017774406:
case 017774414:
case 017774416:
case 017774420:
case 017774422:
case 017774424:
case 017774426:
/* EBO */
case 017774410:
case 017774412:
#if PRO_EBO_PRESENT
case 017774602:
#endif
pro_vid_wr(data, pa, access);
break;
#endif
#if PRO_MEM_PRESENT
case 017775002:
case 017775004:
case 017775006:
pro_mem_wr(data, pa, access);
break;
#endif
/* Option board 6 not installed
case 017775202:
break;
*/
case 017777560:
case 017777562:
case 017777564:
case 017777566:
pro_maint_wr(data, pa, access); /* maintenance terminal interface */
break;
case 017777750:
/* Processor maintenance register */
break;
default:
#ifdef IOTRACE
if (iotfptr)
{
fprintf(iotfptr, "*W %o, %o\n",pa,data);
fflush(iotfptr);
}
#endif
return SCPE_NXM;
}
#ifdef IOTRACE
if (iotfptr)
{
fprintf(iotfptr, " W %o, %o\n",pa,data);
fflush(iotfptr);
}
#endif
return SCPE_OK;
}
#endif