1 // SPDX-License-Identifier: MIT
3 #include "platforms/platforms.h"
4 #include "pistorm-dev/pistorm-dev-enums.h"
5 #include "amiga-autoconf.h"
13 #define Z2_BOOTROM 0x1
15 // PiStorm Zorro II AutoConfig Fast RAM ROM
16 static unsigned char ac_fast_ram_rom[] = {
17 Z2_Z2 | Z2_FAST, AC_MEM_SIZE_8MB, // 00/02, link into memory free list, 8 MB
18 0x6, 0x9, // 06/09, product id
19 0x8, 0x0, // 08/0a, preference to 8 MB space
20 0x0, 0x0, // 0c/0e, reserved
21 PISTORM_AC_MANUF_ID, // Manufacturer ID
22 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x2, 0x0, // 18/.../26, serial
23 0x0, 0x0, 0x0, 0x0, // Optional BOOT ROM vector
26 // PiSCSI AutoConfig Device ROM
27 unsigned char ac_piscsi_rom[] = {
28 Z2_Z2 | Z2_BOOTROM, AC_MEM_SIZE_64KB, // 00/01, Z2, bootrom, 64 KB
29 0x6, 0xA, // 06/0A, product id
30 0x0, 0x0, // 00/0a, any space where it fits
31 0x0, 0x0, // 0c/0e, reserved
32 PISTORM_AC_MANUF_ID, // Manufacturer ID
33 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x2, 0x1, // 18/.../26, serial
34 0x4, 0x0, 0x0, 0x0, // Optional BOOT ROM vector
37 // PiStorm Device Interaction ROM
38 unsigned char ac_pistorm_rom[] = {
39 Z2_Z2, AC_MEM_SIZE_64KB, // 00/01, Z2, bootrom, 64 KB
40 0x6, 0xB, // 06/0B, product id
41 0x0, 0x0, // 00/0a, any space where it fits
42 0x0, 0x0, // 0c/0e, reserved
43 PISTORM_AC_MANUF_ID, // Manufacturer ID
44 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x2, 0x2, // 18/.../26, serial
45 0x4, 0x0, 0x0, 0x0, // Optional BOOT ROM vector
49 static unsigned char ac_a314_rom[] = {
50 0xc, AC_MEM_SIZE_64KB, // 00/02, 64 kB
51 0xa, 0x3, // 04/06, product id
52 0x0, 0x0, // 08/0a, any space okay
53 0x0, 0x0, // 0c/0e, reserved
54 0x0, 0x7, 0xd, 0xb, // 10/12/14/16, mfg id
55 0xa, 0x3, 0x1, 0x4, 0x0, 0x0, 0x0, 0x0, // 18/.../26, serial
56 0x0, 0x0, 0x0, 0x0, // Optional BOOT ROM vector
59 extern unsigned int a314_base;
61 int ac_z2_current_pic = 0;
62 int ac_z2_pic_count = 0;
64 int ac_z2_type[AC_PIC_LIMIT];
65 int ac_z2_index[AC_PIC_LIMIT];
66 unsigned int ac_base[AC_PIC_LIMIT];
68 int ac_z3_current_pic = 0;
69 int ac_z3_pic_count = 0;
71 int ac_z3_type[AC_PIC_LIMIT];
72 int ac_z3_index[AC_PIC_LIMIT];
74 uint32_t piscsi_base = 0, pistorm_dev_base = 0;
75 extern uint8_t *piscsi_rom_ptr;
77 unsigned char get_autoconf_size(int size) {
78 if (size == 8 * SIZE_MEGA)
79 return AC_MEM_SIZE_8MB;
80 if (size == 4 * SIZE_MEGA)
81 return AC_MEM_SIZE_4MB;
82 if (size == 2 * SIZE_MEGA)
83 return AC_MEM_SIZE_2MB;
85 return AC_MEM_SIZE_64KB;
88 unsigned char get_autoconf_size_ext(int size) {
89 if (size == 16 * SIZE_MEGA)
90 return AC_MEM_SIZE_EXT_16MB;
91 if (size == 32 * SIZE_MEGA)
92 return AC_MEM_SIZE_EXT_32MB;
93 if (size == 64 * SIZE_MEGA)
94 return AC_MEM_SIZE_EXT_64MB;
95 if (size == 128 * SIZE_MEGA)
96 return AC_MEM_SIZE_EXT_128MB;
97 if (size == 256 * SIZE_MEGA)
98 return AC_MEM_SIZE_EXT_256MB;
99 if (size == 512 * SIZE_MEGA)
100 return AC_MEM_SIZE_EXT_512MB;
101 if (size == 1024 * SIZE_MEGA)
102 return AC_MEM_SIZE_EXT_1024MB;
104 return AC_MEM_SIZE_EXT_64MB;
107 extern void adjust_ranges_amiga(struct emulator_config *cfg);
109 void autoconfig_reset_all() {
110 printf("[AUTOCONF] Resetting all autoconf data.\n");
111 for (int i = 0; i < AC_PIC_LIMIT; i++) {
112 ac_z2_type[i] = ACTYPE_NONE;
113 ac_z3_type[i] = ACTYPE_NONE;
119 ac_z2_current_pic = 0;
120 ac_z3_current_pic = 0;
123 unsigned int autoconfig_read_memory_z3_8(struct emulator_config *cfg, unsigned int address) {
124 int index = ac_z3_index[ac_z3_current_pic];
125 unsigned char val = 0;
127 if ((address & 0xFF) >= AC_Z3_REG_RES50 && (address & 0xFF) <= AC_Z3_REG_RES7C) {
131 switch(address & 0xFF) {
132 case AC_Z3_REG_ER_TYPE:
134 if (cfg->map_type[index] == MAPTYPE_RAM)
135 val |= BOARDTYPE_FREEMEM;
136 if (cfg->map_size[index] > 8 * SIZE_MEGA)
137 val |= get_autoconf_size_ext(cfg->map_size[index]);
139 val |= get_autoconf_size(cfg->map_size[index]);
140 if (ac_z3_current_pic + 1 < ac_z3_pic_count)
141 val |= BOARDTYPE_LINKED;
142 // Pre-invert this value, since it's the only value not physically complemented
146 case AC_Z3_REG_ER_PRODUCT:
150 case AC_Z3_REG_ER_FLAGS:
151 if (cfg->map_type[index] == MAPTYPE_RAM)
152 val |= Z3_FLAGS_MEMORY;
153 if (cfg->map_size[index] > 8 * SIZE_MEGA)
154 val |= Z3_FLAGS_EXTENSION;
155 val |= Z3_FLAGS_RESERVED;
156 // Bottom four bits are zero, useless unles you want really odd RAM sizes.
158 // Manufacturer ID low/high bytes.
159 case AC_Z3_REG_MAN_LO:
160 val = PISTORM_MANUF_ID & 0x00FF;
162 case AC_Z3_REG_MAN_HI:
163 val = (PISTORM_MANUF_ID >> 8);
165 case AC_Z3_REG_SER_BYTE0:
166 case AC_Z3_REG_SER_BYTE1:
167 case AC_Z3_REG_SER_BYTE2:
168 case AC_Z3_REG_SER_BYTE3:
169 // Expansion board serial assigned by manufacturer.
172 case AC_Z3_REG_INIT_DIAG_VEC_LO:
173 case AC_Z3_REG_INIT_DIAG_VEC_HI:
174 // 16-bit offset to boot ROM in assigned memory range.
177 // Additional reserved/unused registers.
178 case AC_Z3_REG_ER_RES03:
179 case AC_Z3_REG_ER_RES0D:
180 case AC_Z3_REG_ER_RES0E:
181 case AC_Z3_REG_ER_RES0F:
182 case AC_Z3_REG_ER_Z2_INT:
190 //printf("Read byte %d from Z3 autoconf for PIC %d (%.2X).\n", address, ac_z3_current_pic, val);
191 return (address & 0x100) ? (val << 4) ^ 0xFF : (val & 0xF0) ^ 0xFF;
196 void autoconfig_write_memory_z3_8(struct emulator_config *cfg, unsigned int address, unsigned int value) {
197 int index = ac_z3_index[ac_z3_current_pic];
198 unsigned char val = (unsigned char)value;
201 switch(address & 0xFF) {
202 case AC_Z3_REG_WR_ADDR_LO:
204 ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0xFF0F0000) | ((val & 0xF0) << 16);
208 ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0xFF000000) | (val << 16);
210 case AC_Z3_REG_WR_ADDR_HI:
212 ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0x0FFF0000) | ((val & 0xF0) << 24);
215 ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0x00FF0000) | (val << 24);
218 case AC_Z3_REG_WR_ADDR_NIB_LO:
219 ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0xFFF00000) | ((val & 0xF0) << 12);
222 case AC_Z3_REG_WR_ADDR_NIB_HI:
223 ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0xF0FF0000) | ((val & 0xF0) << 20);
226 case AC_Z3_REG_SHUTUP:
227 //printf("Write to Z3 shutup register for PIC %d.\n", ac_z3_current_pic);
236 printf("[AUTOCONF] Address of Z3 autoconf RAM assigned to $%.8x [B]\n", ac_base[ac_z3_current_pic]);
237 cfg->map_offset[index] = ac_base[ac_z3_current_pic];
238 cfg->map_high[index] = cfg->map_offset[index] + cfg->map_size[index];
239 m68k_add_ram_range(cfg->map_offset[index], cfg->map_high[index], cfg->map_data[index]);
241 if (ac_z3_current_pic == ac_z3_pic_count) {
243 adjust_ranges_amiga(cfg);
250 void autoconfig_write_memory_z3_16(struct emulator_config *cfg, unsigned int address, unsigned int value) {
251 int index = ac_z3_index[ac_z3_current_pic];
252 unsigned short val = (unsigned short)value;
255 switch(address & 0xFF) {
256 case AC_Z3_REG_WR_ADDR_HI:
257 // This is, as far as I know, the only register it should write a 16-bit value to.
258 ac_base[ac_z3_current_pic] = (ac_base[ac_z3_current_pic] & 0x00000000) | (val << 16);
262 printf("Unknown WORD write to Z3 autoconf address $%.2X", address & 0xFF);
263 //stop_cpu_emulation();
268 printf("[AUTOCONF] Address of Z3 autoconf RAM assigned to $%.8x [W]\n", ac_base[ac_z3_current_pic]);
269 cfg->map_offset[index] = ac_base[ac_z3_current_pic];
270 cfg->map_high[index] = cfg->map_offset[index] + cfg->map_size[index];
271 m68k_add_ram_range(cfg->map_offset[index], cfg->map_high[index], cfg->map_data[index]);
273 if (ac_z3_current_pic == ac_z3_pic_count) {
275 adjust_ranges_amiga(cfg);
282 void add_z2_pic(uint8_t type, uint8_t index) {
283 if (ac_z2_pic_count < AC_PIC_LIMIT) {
284 ac_z2_type[ac_z2_pic_count] = type;
285 ac_z2_index[ac_z2_pic_count] = index;
289 printf("[AUTOCONF] Failed to add Z2 PIC of type %d, limit exceeded.\n", type);
292 void remove_z2_pic(uint8_t type, uint8_t index) {
293 uint8_t pic_found = 0;
296 for (uint32_t i = 0; i < ac_z2_pic_count; i++) {
297 if (ac_z2_type[i] == type && !pic_found) {
300 if (pic_found && i < AC_PIC_LIMIT - 1) {
301 ac_z2_type[i] = ac_z2_type[i + 1];
302 ac_z2_index[i] = ac_z2_index[ i + 1];
307 ac_z2_type[AC_PIC_LIMIT - 1] = ACTYPE_NONE;
308 ac_z2_index[AC_PIC_LIMIT - 1] = 0;
312 printf("[AUTOCONF] Tried to remove Z2 PIC of type %d, but it wasn't found.\n", type);
316 unsigned int autoconfig_read_memory_8(struct emulator_config *cfg, unsigned int address) {
317 unsigned char *rom = NULL;
318 unsigned char val = 0;
320 switch(ac_z2_type[ac_z2_current_pic]) {
321 case ACTYPE_MAPFAST_Z2:
322 rom = ac_fast_ram_rom;
330 case ACTYPE_PISTORM_DEV:
331 rom = ac_pistorm_rom;
339 if ((address & 1) == 0 && (address / 2) < (int)sizeof(ac_fast_ram_rom)) {
340 if (ac_z2_type[ac_z2_current_pic] == ACTYPE_MAPFAST_Z2 && address / 2 == 1) {
341 val = get_autoconf_size(cfg->map_size[ac_z2_index[ac_z2_current_pic]]);
342 if (ac_z2_current_pic + 1 < ac_z2_pic_count)
343 val |= BOARDTYPE_LINKED;
346 val = rom[address / 2];
347 //printf("Read byte %d from Z2 autoconf for PIC %d (%.2X).\n", address/2, ac_z2_current_pic, val);
350 if (address != 0 && address != 2 && address != 0x40 && address != 0x42)
353 return (unsigned int)val;
356 void autoconfig_write_memory_8(struct emulator_config *cfg, unsigned int address, unsigned int value) {
358 int index = ac_z2_index[ac_z2_current_pic];
360 unsigned int *base = NULL;
362 switch(ac_z2_type[ac_z2_current_pic]) {
363 case ACTYPE_MAPFAST_Z2:
364 base = &ac_base[ac_z2_current_pic];
372 case ACTYPE_PISTORM_DEV:
373 base = &pistorm_dev_base;
380 //printf("Failed to set up the base for autoconfig PIC %d.\n", ac_z2_current_pic);
384 if (address == 0x4a) { // base[19:16]
385 *base = (value & 0xf0) << (16 - 4);
386 } else if (address == 0x48) { // base[23:20]
388 *base |= (value & 0xf0) << (20 - 4);
390 if (ac_z2_type[ac_z2_current_pic] == ACTYPE_A314) {
391 //a314_set_mem_base_size(*base, cfg->map_size[ac_index[ac_z2_current_pic]]);
394 } else if (address == 0x4c) { // shut up
395 //printf("Write to Z2 shutup register for PIC %d.\n", ac_z2_current_pic);
401 switch (ac_z2_type[ac_z2_current_pic]) {
402 case ACTYPE_MAPFAST_Z2:
403 cfg->map_offset[index] = ac_base[ac_z2_current_pic];
404 cfg->map_high[index] = cfg->map_offset[index] + cfg->map_size[index];
405 printf("[AUTOCONF] Address of Z2 autoconf RAM assigned to $%.8X\n", ac_base[ac_z2_current_pic]);
406 m68k_add_ram_range(cfg->map_offset[index], cfg->map_high[index], cfg->map_data[index]);
407 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);
410 printf("[AUTOCONF] PiSCSI Z2 device assigned to $%.8X\n", piscsi_base);
411 //m68k_add_rom_range(piscsi_base + (16 * SIZE_KILO), piscsi_base + (32 * SIZE_KILO), piscsi_rom_ptr);
414 printf("[AUTOCONF] A314 emulation device assigned to $%.8X\n", a314_base);
416 case ACTYPE_PISTORM_DEV:
417 printf("[AUTOCONF] PiStorm Interaction Z2 device assigned to $%.8X\n", pistorm_dev_base);
420 printf("[!!!AUTOCONF] Some strange unknown Z2 device has been assigned to $%.8X?", *base);
424 if (ac_z2_current_pic == ac_z2_pic_count) {
426 adjust_ranges_amiga(cfg);