| /* mp-b2.c: SWTP SS-50/SS-30 MP-B2 Mother Board | |
| Copyright (c) 2011, William A. Beech | |
| 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 | |
| WILLIAM A. BEECH 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 William A. Beech shall not be | |
| used in advertising or otherwise to promote the sale, use or other dealings | |
| in this Software without prior written authorization from William A. Beech. | |
| */ | |
| #include <stdio.h> | |
| #include "swtp_defs.h" | |
| #define UNIT_V_RAM_0000 (UNIT_V_UF) /* MP-8M board 0 enable */ | |
| #define UNIT_RAM_0000 (1 << UNIT_V_RAM_0000) | |
| #define UNIT_V_RAM_2000 (UNIT_V_UF+1) /* MP-8M board 1 enable */ | |
| #define UNIT_RAM_2000 (1 << UNIT_V_RAM_2000) | |
| #define UNIT_V_RAM_4000 (UNIT_V_UF+2) /* MP-8M board 2 enable */ | |
| #define UNIT_RAM_4000 (1 << UNIT_V_RAM_4000) | |
| #define UNIT_V_RAM_6000 (UNIT_V_UF+3) /* MP-8M board 3 enable */ | |
| #define UNIT_RAM_6000 (1 << UNIT_V_RAM_6000) | |
| #define UNIT_V_RAM_A000 (UNIT_V_UF+4) /* MP-8M board 4 enable */ | |
| #define UNIT_RAM_A000 (1 << UNIT_V_RAM_A000) | |
| #define UNIT_V_RAM_C000 (UNIT_V_UF+5) /* MP-8M board 5 enable */ | |
| #define UNIT_RAM_C000 (1 << UNIT_V_RAM_C000) | |
| /* function prototypes */ | |
| /* empty I/O device routine */ | |
| int32 nulldev(int32 io, int32 data); | |
| /* SS-50 bus routines */ | |
| int32 MB_get_mbyte(int32 addr); | |
| int32 MB_get_mword(int32 addr); | |
| void MB_put_mbyte(int32 addr, int32 val); | |
| void MB_put_mword(int32 addr, int32 val); | |
| /* MP-8M bus routines */ | |
| extern int32 mp_8m_get_mbyte(int32 addr); | |
| extern void mp_8m_put_mbyte(int32 addr, int32 val); | |
| /* SS-50 I/O address space functions */ | |
| /* MP-S serial I/O routines */ | |
| extern int32 sio0s(int32 io, int32 data); | |
| extern int32 sio0d(int32 io, int32 data); | |
| extern int32 sio1s(int32 io, int32 data); | |
| extern int32 sio1d(int32 io, int32 data); | |
| /* DC-4 FDC I/O routines */ | |
| extern int32 fdcdrv(int32 io, int32 data); | |
| extern int32 fdccmd(int32 io, int32 data); | |
| extern int32 fdctrk(int32 io, int32 data); | |
| extern int32 fdcsec(int32 io, int32 data); | |
| extern int32 fdcdata(int32 io, int32 data); | |
| /* This is the I/O configuration table. There are 32 possible | |
| device addresses, if a device is plugged into a port it's routine | |
| address is here, 'nulldev' means no device is available | |
| */ | |
| struct idev { | |
| int32 (*routine)(); | |
| }; | |
| struct idev dev_table[32] = { | |
| {&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /*Port 0 8000-8003 */ | |
| {&sio0s}, {&sio0d}, {&sio1s}, {&sio1d}, /*Port 1 8004-8007 */ | |
| /* sio1x routines just return the last value read on the matching | |
| sio0x routine. SWTBUG tests for the MP-C with most port reads! */ | |
| {&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /*Port 2 8008-800B*/ | |
| {&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /*Port 3 800C-800F*/ | |
| {&nulldev}, {&nulldev}, {&nulldev}, {&nulldev}, /*Port 4 8010-8013*/ | |
| {&fdcdrv}, {&nulldev}, {&nulldev}, {&nulldev}, /*Port 5 8014-8017*/ | |
| {&fdccmd}, {&fdctrk}, {&fdcsec}, {&fdcdata}, /*Port 6 8018-801B*/ | |
| {&nulldev}, {&nulldev}, {&nulldev}, {&nulldev} /*Port 7 801C-801F*/ | |
| }; | |
| /* dummy i/o device */ | |
| int32 nulldev(int32 io, int32 data) | |
| { | |
| if (io == 0) | |
| return (0xFF); | |
| return 0; | |
| } | |
| /* Mother Board data structures | |
| MB_dev Mother Board device descriptor | |
| MB_unit Mother Board unit descriptor | |
| MB_reg Mother Board register list | |
| MB_mod Mother Board modifiers list | |
| */ | |
| UNIT MB_unit = { | |
| UDATA (NULL, 0, 0) | |
| }; | |
| REG MB_reg[] = { | |
| { NULL } | |
| }; | |
| MTAB MB_mod[] = { | |
| { UNIT_RAM_0000, UNIT_RAM_0000, "BD0 On", "BD0", NULL }, | |
| { UNIT_RAM_0000, 0, "BD0 Off", "NOBD0", NULL }, | |
| { UNIT_RAM_2000, UNIT_RAM_2000, "BD1 On", "BD1", NULL }, | |
| { UNIT_RAM_2000, 0, "BD1 Off", "NOBD1", NULL }, | |
| { UNIT_RAM_4000, UNIT_RAM_4000, "BD2 On", "BD2", NULL }, | |
| { UNIT_RAM_4000, 0, "BD2 Off", "NOBD2", NULL }, | |
| { UNIT_RAM_6000, UNIT_RAM_6000, "BD3 On", "BD3", NULL }, | |
| { UNIT_RAM_6000, 0, "BD3 Off", "NOBD3", NULL }, | |
| { UNIT_RAM_A000, UNIT_RAM_A000, "BD4 On", "BD4", NULL }, | |
| { UNIT_RAM_A000, 0, "BD4 Off", "NOBD4", NULL }, | |
| { UNIT_RAM_C000, UNIT_RAM_C000, "BD5 On", "BD5", NULL }, | |
| { UNIT_RAM_C000, 0, "BD5 Off", "NOBD5", NULL }, | |
| { 0 } | |
| }; | |
| DEBTAB MB_debug[] = { | |
| { "ALL", DEBUG_all }, | |
| { "FLOW", DEBUG_flow }, | |
| { "READ", DEBUG_read }, | |
| { "WRITE", DEBUG_write }, | |
| { "LEV1", DEBUG_level1 }, | |
| { "LEV2", DEBUG_level2 }, | |
| { NULL } | |
| }; | |
| DEVICE MB_dev = { | |
| "MP-B2", //name | |
| &MB_unit, //units | |
| MB_reg, //registers | |
| MB_mod, //modifiers | |
| 1, //numunits | |
| 16, //aradix | |
| 16, //awidth | |
| 1, //aincr | |
| 16, //dradix | |
| 8, //dwidth | |
| NULL, //examine | |
| NULL, //deposit | |
| NULL, //reset | |
| NULL, //boot | |
| NULL, //attach | |
| NULL, //detach | |
| NULL, //ctxt | |
| DEV_DEBUG, //flags | |
| 0, //dctrl | |
| MB_debug, /* debflags */ | |
| NULL, //msize | |
| NULL //lname | |
| }; | |
| /* get a byte from memory */ | |
| int32 MB_get_mbyte(int32 addr) | |
| { | |
| int32 val; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mbyte: addr=%04X\n", addr); | |
| switch(addr & 0xF000) { | |
| case 0x0000: | |
| case 0x1000: | |
| if (MB_unit.flags & UNIT_RAM_0000) { | |
| val = mp_8m_get_mbyte(addr) & 0xFF; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mbyte: mp_8m val=%02X\n", val); | |
| return val; | |
| } else | |
| return 0xFF; | |
| case 0x2000: | |
| case 0x3000: | |
| if (MB_unit.flags & UNIT_RAM_2000) { | |
| val = mp_8m_get_mbyte(addr) & 0xFF; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mbyte: mp_8m val=%02X\n", val); | |
| return val; | |
| } else | |
| return 0xFF; | |
| case 0x4000: | |
| case 0x5000: | |
| if (MB_unit.flags & UNIT_RAM_4000) { | |
| val = mp_8m_get_mbyte(addr) & 0xFF; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mbyte: mp_8m val=%02X\n", val); | |
| return val; | |
| } else | |
| return 0xFF; | |
| case 0x6000: | |
| case 0x7000: | |
| if (MB_unit.flags & UNIT_RAM_6000) { | |
| val = mp_8m_get_mbyte(addr) & 0xFF; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mbyte: mp_8m val=%02X\n", val); | |
| return val; | |
| } else | |
| return 0xFF; | |
| case 0x8000: | |
| val = (dev_table[addr - 0x8000].routine(0, 0)) & 0xFF; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mbyte: I/O addr=%04X val=%02X\n", addr, val); | |
| return val; | |
| case 0xA000: | |
| case 0xB000: | |
| if (MB_unit.flags & UNIT_RAM_A000) { | |
| val = mp_8m_get_mbyte(addr) & 0xFF; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mbyte: mp_8m val=%02X\n", val); | |
| return val; | |
| } else | |
| return 0xFF; | |
| case 0xC000: | |
| case 0xD000: | |
| if (MB_unit.flags & UNIT_RAM_C000) { | |
| val = mp_8m_get_mbyte(addr) & 0xFF; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mbyte: mp_8m val=%02X\n", val); | |
| return val; | |
| } else | |
| return 0xFF; | |
| default: | |
| return 0xFF; | |
| } | |
| } | |
| /* get a word from memory */ | |
| int32 MB_get_mword(int32 addr) | |
| { | |
| int32 val; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mword: addr=%04X\n", addr); | |
| val = (MB_get_mbyte(addr) << 8); | |
| val |= MB_get_mbyte(addr+1); | |
| val &= 0xFFFF; | |
| if (MB_dev.dctrl & DEBUG_read) | |
| printf("MB_get_mword: val=%04X\n", val); | |
| return val; | |
| } | |
| /* put a byte to memory */ | |
| void MB_put_mbyte(int32 addr, int32 val) | |
| { | |
| if (MB_dev.dctrl & DEBUG_write) | |
| printf("MB_put_mbyte: addr=%04X, val=%02X\n", addr, val); | |
| switch(addr & 0xF000) { | |
| case 0x0000: | |
| case 0x1000: | |
| if (MB_unit.flags & UNIT_RAM_0000) { | |
| mp_8m_put_mbyte(addr, val); | |
| return; | |
| } | |
| case 0x2000: | |
| case 0x3000: | |
| if (MB_unit.flags & UNIT_RAM_2000) { | |
| mp_8m_put_mbyte(addr, val); | |
| return; | |
| } | |
| case 0x4000: | |
| case 0x5000: | |
| if (MB_unit.flags & UNIT_RAM_4000) { | |
| mp_8m_put_mbyte(addr, val); | |
| return; | |
| } | |
| case 0x6000: | |
| case 0x7000: | |
| if (MB_unit.flags & UNIT_RAM_6000) { | |
| mp_8m_put_mbyte(addr, val); | |
| return; | |
| } | |
| case 0x8000: | |
| dev_table[addr - 0x8000].routine(1, val); | |
| return; | |
| case 0xA000: | |
| case 0xB000: | |
| if (MB_unit.flags & UNIT_RAM_A000) { | |
| mp_8m_put_mbyte(addr, val); | |
| return; | |
| } | |
| case 0xC000: | |
| case 0xD000: | |
| if (MB_unit.flags & UNIT_RAM_C000) { | |
| mp_8m_put_mbyte(addr, val); | |
| return; | |
| } | |
| default: | |
| return; | |
| } | |
| } | |
| /* put a word to memory */ | |
| void MB_put_mword(int32 addr, int32 val) | |
| { | |
| if (MB_dev.dctrl & DEBUG_write) | |
| printf("MB_ptt_mword: addr=%04X, val=%04X\n", addr, val); | |
| MB_put_mbyte(addr, val >> 8); | |
| MB_put_mbyte(addr+1, val); | |
| } | |
| /* end of mp-b2.c */ |