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captain-amygdala.pistorm/platforms/amiga/amiga-autoconf.c
beeanyew 9fd6ef0a7c Theoretically working A314 emulation 
This most definitely requires a make clean and then make, due to all the header files edited.
I can't seem to build a314.device, so it's not included yet.
2021-05-16 07:03:19 +02:00

430 lines
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// SPDX-License-Identifier: MIT
#include "platforms/platforms.h"
#include "pistorm-dev/pistorm-dev-enums.h"
#include "amiga-autoconf.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "a314/a314.h"
#define Z2_Z2 0xC
#define Z2_FAST 0x2
#define Z2_BOOTROM 0x1
// PiStorm Zorro II AutoConfig Fast RAM ROM
static unsigned char ac_fast_ram_rom[] = {
Z2_Z2 | Z2_FAST, AC_MEM_SIZE_8MB, // 00/02, link into memory free list, 8 MB
0x6, 0x9, // 06/09, product id
0x8, 0x0, // 08/0a, preference to 8 MB space
0x0, 0x0, // 0c/0e, reserved
PISTORM_AC_MANUF_ID, // Manufacturer ID
0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x2, 0x0, // 18/.../26, serial
0x0, 0x0, 0x0, 0x0, // Optional BOOT ROM vector
};
// PiSCSI AutoConfig Device ROM
unsigned char ac_piscsi_rom[] = {
Z2_Z2 | Z2_BOOTROM, AC_MEM_SIZE_64KB, // 00/01, Z2, bootrom, 64 KB
0x6, 0xA, // 06/0A, product id
0x0, 0x0, // 00/0a, any space where it fits
0x0, 0x0, // 0c/0e, reserved
PISTORM_AC_MANUF_ID, // Manufacturer ID
0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x2, 0x1, // 18/.../26, serial
0x4, 0x0, 0x0, 0x0, // Optional BOOT ROM vector
};
// PiStorm Device Interaction ROM
unsigned char ac_pistorm_rom[] = {
Z2_Z2, AC_MEM_SIZE_64KB, // 00/01, Z2, bootrom, 64 KB
0x6, 0xB, // 06/0B, product id
0x0, 0x0, // 00/0a, any space where it fits
0x0, 0x0, // 0c/0e, reserved
PISTORM_AC_MANUF_ID, // Manufacturer ID
0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x2, 0x2, // 18/.../26, serial
0x4, 0x0, 0x0, 0x0, // Optional BOOT ROM vector
};
// A314 Emulation ROM
static unsigned char ac_a314_rom[] = {
0xc, AC_MEM_SIZE_64KB, // 00/02, 64 kB
0xa, 0x3, // 04/06, product id
0x0, 0x0, // 08/0a, any space okay
0x0, 0x0, // 0c/0e, reserved
0x0, 0x7, 0xd, 0xb, // 10/12/14/16, mfg id
0xa, 0x3, 0x1, 0x4, 0x0, 0x0, 0x0, 0x0, // 18/.../26, serial
0x0, 0x0, 0x0, 0x0, // Optional BOOT ROM vector
};
extern unsigned int a314_base;
int ac_z2_current_pic = 0;
int ac_z2_pic_count = 0;
int ac_z2_done = 0;
int ac_z2_type[AC_PIC_LIMIT];
int ac_z2_index[AC_PIC_LIMIT];
unsigned int ac_base[AC_PIC_LIMIT];
int ac_z3_current_pic = 0;
int ac_z3_pic_count = 0;
int ac_z3_done = 0;
int ac_z3_type[AC_PIC_LIMIT];
int ac_z3_index[AC_PIC_LIMIT];
uint32_t piscsi_base = 0, pistorm_dev_base = 0;
extern uint8_t *piscsi_rom_ptr;
unsigned char get_autoconf_size(int size) {
if (size == 8 * SIZE_MEGA)
return AC_MEM_SIZE_8MB;
if (size == 4 * SIZE_MEGA)
return AC_MEM_SIZE_4MB;
if (size == 2 * SIZE_MEGA)
return AC_MEM_SIZE_2MB;
else
return AC_MEM_SIZE_64KB;
}
unsigned char get_autoconf_size_ext(int size) {
if (size == 16 * SIZE_MEGA)
return AC_MEM_SIZE_EXT_16MB;
if (size == 32 * SIZE_MEGA)
return AC_MEM_SIZE_EXT_32MB;
if (size == 64 * SIZE_MEGA)
return AC_MEM_SIZE_EXT_64MB;
if (size == 128 * SIZE_MEGA)
return AC_MEM_SIZE_EXT_128MB;
if (size == 256 * SIZE_MEGA)
return AC_MEM_SIZE_EXT_256MB;
if (size == 512 * SIZE_MEGA)
return AC_MEM_SIZE_EXT_512MB;
if (size == 1024 * SIZE_MEGA)
return AC_MEM_SIZE_EXT_1024MB;
else
return AC_MEM_SIZE_EXT_64MB;
}
extern void adjust_ranges_amiga(struct emulator_config *cfg);
void autoconfig_reset_all() {
printf("[AUTOCONF] Resetting all autoconf data.\n");
for (int i = 0; i < AC_PIC_LIMIT; i++) {
ac_z2_type[i] = ACTYPE_NONE;
ac_z3_type[i] = ACTYPE_NONE;
ac_z2_index[i] = 0;
ac_z3_index[i] = 0;
}
ac_z3_pic_count = 0;
ac_z2_pic_count = 0;
ac_z2_current_pic = 0;
ac_z3_current_pic = 0;
}
unsigned int autoconfig_read_memory_z3_8(struct emulator_config *cfg, unsigned int address) {
int index = ac_z3_index[ac_z3_current_pic];
unsigned char val = 0;
if ((address & 0xFF) >= AC_Z3_REG_RES50 && (address & 0xFF) <= AC_Z3_REG_RES7C) {
val = 0;
}
else {
switch(address & 0xFF) {
case AC_Z3_REG_ER_TYPE:
val |= BOARDTYPE_Z3;
if (cfg->map_type[index] == MAPTYPE_RAM)
val |= BOARDTYPE_FREEMEM;
if (cfg->map_size[index] > 8 * SIZE_MEGA)
val |= get_autoconf_size_ext(cfg->map_size[index]);
else
val |= get_autoconf_size(cfg->map_size[index]);
if (ac_z3_current_pic + 1 < ac_z3_pic_count)
val |= BOARDTYPE_LINKED;
// Pre-invert this value, since it's the only value not physically complemented
// for Zorro III.
val ^= 0xFF;
break;
case AC_Z3_REG_ER_PRODUCT:
// 1.1... maybe...
val = 0x11;
break;
case AC_Z3_REG_ER_FLAGS:
if (cfg->map_type[index] == MAPTYPE_RAM)
val |= Z3_FLAGS_MEMORY;
if (cfg->map_size[index] > 8 * SIZE_MEGA)
val |= Z3_FLAGS_EXTENSION;
val |= Z3_FLAGS_RESERVED;
// Bottom four bits are zero, useless unles you want really odd RAM sizes.
break;
// Manufacturer ID low/high bytes.
case AC_Z3_REG_MAN_LO:
val = PISTORM_MANUF_ID & 0x00FF;
break;
case AC_Z3_REG_MAN_HI:
val = (PISTORM_MANUF_ID >> 8);
break;
case AC_Z3_REG_SER_BYTE0:
case AC_Z3_REG_SER_BYTE1:
case AC_Z3_REG_SER_BYTE2:
case AC_Z3_REG_SER_BYTE3:
// Expansion board serial assigned by manufacturer.
val = 0;
break;
case AC_Z3_REG_INIT_DIAG_VEC_LO:
case AC_Z3_REG_INIT_DIAG_VEC_HI:
// 16-bit offset to boot ROM in assigned memory range.
val = 0;
break;
// Additional reserved/unused registers.
case AC_Z3_REG_ER_RES03:
case AC_Z3_REG_ER_RES0D:
case AC_Z3_REG_ER_RES0E:
case AC_Z3_REG_ER_RES0F:
case AC_Z3_REG_ER_Z2_INT:
val = 0;
break;
default:
val = 0;
break;
}
}
//printf("Read byte %d from Z3 autoconf for PIC %d (%.2X).\n", address, ac_z3_current_pic, val);
return (address & 0x100) ? (val << 4) ^ 0xFF : (val & 0xF0) ^ 0xFF;
}
int nib_latch = 0;
void autoconfig_write_memory_z3_8(struct emulator_config *cfg, unsigned int address, unsigned int value) {
int index = ac_z3_index[ac_z3_current_pic];
unsigned char val = (unsigned char)value;
int done = 0;
switch(address & 0xFF) {
case AC_Z3_REG_WR_ADDR_LO:
if (nib_latch) {
ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0xFF0F0000) | ((val & 0xF0) << 16);
nib_latch = 0;
}
else
ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0xFF000000) | (val << 16);
break;
case AC_Z3_REG_WR_ADDR_HI:
if (nib_latch) {
ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0x0FFF0000) | ((val & 0xF0) << 24);
nib_latch = 0;
}
ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0x00FF0000) | (val << 24);
done = 1;
break;
case AC_Z3_REG_WR_ADDR_NIB_LO:
ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0xFFF00000) | ((val & 0xF0) << 12);
nib_latch = 1;
break;
case AC_Z3_REG_WR_ADDR_NIB_HI:
ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0xF0FF0000) | ((val & 0xF0) << 20);
nib_latch = 1;
break;
case AC_Z3_REG_SHUTUP:
//printf("Write to Z3 shutup register for PIC %d.\n", ac_z3_current_pic);
done = 1;
break;
default:
break;
}
if (done) {
nib_latch = 0;
printf("[AUTOCONF] Address of Z3 autoconf RAM assigned to $%.8x [B]\n", ac_base[ac_z3_current_pic]);
cfg->map_offset[index] = ac_base[ac_z3_current_pic];
cfg->map_high[index] = cfg->map_offset[index] + cfg->map_size[index];
m68k_add_ram_range(cfg->map_offset[index], cfg->map_high[index], cfg->map_data[index]);
ac_z3_current_pic++;
if (ac_z3_current_pic == ac_z3_pic_count) {
ac_z3_done = 1;
adjust_ranges_amiga(cfg);
}
}
return;
}
void autoconfig_write_memory_z3_16(struct emulator_config *cfg, unsigned int address, unsigned int value) {
int index = ac_z3_index[ac_z3_current_pic];
unsigned short val = (unsigned short)value;
int done = 0;
switch(address & 0xFF) {
case AC_Z3_REG_WR_ADDR_HI:
// This is, as far as I know, the only register it should write a 16-bit value to.
ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0x00000000) | (val << 16);
done = 1;
break;
default:
printf("Unknown WORD write to Z3 autoconf address $%.2X", address & 0xFF);
//stop_cpu_emulation();
break;
}
if (done) {
printf("[AUTOCONF] Address of Z3 autoconf RAM assigned to $%.8x [W]\n", ac_base[ac_z3_current_pic]);
cfg->map_offset[index] = ac_base[ac_z3_current_pic];
cfg->map_high[index] = cfg->map_offset[index] + cfg->map_size[index];
m68k_add_ram_range(cfg->map_offset[index], cfg->map_high[index], cfg->map_data[index]);
ac_z3_current_pic++;
if (ac_z3_current_pic == ac_z3_pic_count) {
ac_z3_done = 1;
adjust_ranges_amiga(cfg);
}
}
return;
}
void add_z2_pic(uint8_t type, uint8_t index) {
if (ac_z2_pic_count < AC_PIC_LIMIT) {
ac_z2_type[ac_z2_pic_count] = type;
ac_z2_index[ac_z2_pic_count] = index;
ac_z2_pic_count++;
return;
}
printf("[AUTOCONF] Failed to add Z2 PIC of type %d, limit exceeded.\n", type);
}
void remove_z2_pic(uint8_t type, uint8_t index) {
uint8_t pic_found = 0;
if (index) {}
for (uint32_t i = 0; i < ac_z2_pic_count; i++) {
if (ac_z2_type[i] == type && !pic_found) {
pic_found = 1;
}
if (pic_found && i < AC_PIC_LIMIT - 1) {
ac_z2_type[i] = ac_z2_type[i + 1];
ac_z2_index[i] = ac_z2_index[ i + 1];
}
}
if (pic_found) {
ac_z2_type[AC_PIC_LIMIT - 1] = ACTYPE_NONE;
ac_z2_index[AC_PIC_LIMIT - 1] = 0;
ac_z2_pic_count--;
}
else {
printf("[AUTOCONF] Tried to remove Z2 PIC of type %d, but it wasn't found.\n", type);
}
}
unsigned int autoconfig_read_memory_8(struct emulator_config *cfg, unsigned int address) {
unsigned char *rom = NULL;
unsigned char val = 0;
switch(ac_z2_type[ac_z2_current_pic]) {
case ACTYPE_MAPFAST_Z2:
rom = ac_fast_ram_rom;
break;
case ACTYPE_A314:
rom = ac_a314_rom;
break;
case ACTYPE_PISCSI:
rom = ac_piscsi_rom;
break;
case ACTYPE_PISTORM_DEV:
rom = ac_pistorm_rom;
break;
default:
return 0;
break;
}
if ((address & 1) == 0 && (address / 2) < (int)sizeof(ac_fast_ram_rom)) {
if (ac_z2_type[ac_z2_current_pic] == ACTYPE_MAPFAST_Z2 && address / 2 == 1) {
val = get_autoconf_size(cfg->map_size[ac_z2_index[ac_z2_current_pic]]);
if (ac_z2_current_pic + 1 < ac_z2_pic_count)
val |= BOARDTYPE_LINKED;
}
else
val = rom[address / 2];
//printf("Read byte %d from Z2 autoconf for PIC %d (%.2X).\n", address/2, ac_z2_current_pic, val);
}
val <<= 4;
if (address != 0 && address != 2 && address != 0x40 && address != 0x42)
val ^= 0xff;
return (unsigned int)val;
}
void autoconfig_write_memory_8(struct emulator_config *cfg, unsigned int address, unsigned int value) {
int done = 0;
int index = ac_z2_index[ac_z2_current_pic];
unsigned int *base = NULL;
switch(ac_z2_type[ac_z2_current_pic]) {
case ACTYPE_MAPFAST_Z2:
base = &ac_base[ac_z2_current_pic];
break;
case ACTYPE_A314:
base = &a314_base;
break;
case ACTYPE_PISCSI:
base = &piscsi_base;
break;
case ACTYPE_PISTORM_DEV:
base = &pistorm_dev_base;
break;
default:
break;
}
if (!base) {
//printf("Failed to set up the base for autoconfig PIC %d.\n", ac_z2_current_pic);
done = 1;
}
else {
if (address == 0x4a) { // base[19:16]
*base = (value & 0xf0) << (16 - 4);
} else if (address == 0x48) { // base[23:20]
*base &= 0xff0fffff;
*base |= (value & 0xf0) << (20 - 4);
if (ac_z2_type[ac_z2_current_pic] == ACTYPE_A314) {
//a314_set_mem_base_size(*base, cfg->map_size[ac_index[ac_z2_current_pic]]);
}
done = 1;
} else if (address == 0x4c) { // shut up
//printf("Write to Z2 shutup register for PIC %d.\n", ac_z2_current_pic);
done = 1;
}
}
if (done) {
switch (ac_z2_type[ac_z2_current_pic]) {
case ACTYPE_MAPFAST_Z2:
cfg->map_offset[index] = ac_base[ac_z2_current_pic];
cfg->map_high[index] = cfg->map_offset[index] + cfg->map_size[index];
printf("[AUTOCONF] Address of Z2 autoconf RAM assigned to $%.8X\n", ac_base[ac_z2_current_pic]);
m68k_add_ram_range(cfg->map_offset[index], cfg->map_high[index], cfg->map_data[index]);
printf("[AUTOCONF] Z2 PIC %d at $%.8lX-%.8lX, Size: %d MB\n", ac_z2_current_pic, cfg->map_offset[index], cfg->map_high[index], cfg->map_size[index] / SIZE_MEGA);
break;
case ACTYPE_PISCSI:
printf("[AUTOCONF] PiSCSI Z2 device assigned to $%.8X\n", piscsi_base);
//m68k_add_rom_range(piscsi_base + (16 * SIZE_KILO), piscsi_base + (32 * SIZE_KILO), piscsi_rom_ptr);
break;
case ACTYPE_A314:
printf("[AUTOCONF] A314 emulation device assigned to $%.8X\n", a314_base);
break;
case ACTYPE_PISTORM_DEV:
printf("[AUTOCONF] PiStorm Interaction Z2 device assigned to $%.8X\n", pistorm_dev_base);
break;
default:
printf("[!!!AUTOCONF] Some strange unknown Z2 device has been assigned to $%.8X?", *base);
break;
}
ac_z2_current_pic++;
if (ac_z2_current_pic == ac_z2_pic_count) {
ac_z2_done = 1;
adjust_ranges_amiga(cfg);
}
}
}
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