Initial submission of the PCem-Experimental source code.

2016-06-26 00:34:39 +02:00
parent 09d7c4384f
commit fd2a5bc9f5
610 changed files with 184352 additions and 0 deletions
--- a/src/tandy_rom.c
+++ b/src/tandy_rom.c
@@ -0,0 +1,94 @@
+#include <stdlib.h>
+#include "ibm.h"
+#include "device.h"
+#include "mem.h"
+#include "tandy_rom.h"
+
+static uint8_t *tandy_rom;
+static uint8_t tandy_rom_bank;
+static int tandy_rom_offset;
+static mem_mapping_t tandy_rom_mapping;
+
+uint8_t tandy_read_rom(uint32_t addr, void *p)
+{
+        uint32_t addr2 = (addr & 0xffff) + tandy_rom_offset;
+//        if (!nopageerrors) pclog("tandy_read_rom: %05x %05x %02x %04x:%04x\n", addr, addr2, tandy_rom[addr2], CS,pc);
+        return tandy_rom[addr2];
+}
+uint16_t tandy_read_romw(uint32_t addr, void *p)
+{
+        uint32_t addr2 = (addr & 0xffff) + tandy_rom_offset;
+//        if (!nopageerrors) pclog("tandy_read_romw: %05x %05x %04x %04x:%04x\n", addr, addr2, *(uint16_t *)&tandy_rom[addr2], CS,pc);
+        return *(uint16_t *)&tandy_rom[addr2];
+}
+uint32_t tandy_read_roml(uint32_t addr, void *p)
+{
+        uint32_t addr2 = (addr & 0xffff) + tandy_rom_offset;
+//        if (!nopageerrors) pclog("tandy_read_roml: %05x %05x %08x\n", addr, addr2, *(uint32_t *)&tandy_rom[addr2]);
+        return *(uint32_t *)&tandy_rom[addr];
+}
+
+uint8_t tandy_rom_bank_read(uint16_t port, void *p)
+{
+        if (port == 0xffea)
+                return tandy_rom_bank ^ 0x10;
+        else
+                return 0xff;
+}
+void tandy_rom_bank_write(uint16_t port, uint8_t val, void *p)
+{
+        if (port == 0xffea)
+        {
+                tandy_rom_bank = val;
+                tandy_rom_offset = ((val ^ 4) & 7) * 0x10000;
+                mem_mapping_set_exec(&tandy_rom_mapping, &tandy_rom[tandy_rom_offset]);
+//                pclog("tandy_rom_bank_write: port=%04x val=%02x offset=%05x\n", port, val, tandy_rom_offset);
+        }
+//        else
+//                pclog("Bad tandy write port=%04x val=%02x\n", port, val);
+}
+
+void *tandy_rom_init()
+{
+        FILE *f, *ff;
+        int c;
+
+        tandy_rom = malloc(0x80000);
+
+        f  = romfopen("roms/tandy1000sl2/8079047.hu1" ,"rb");
+        ff = romfopen("roms/tandy1000sl2/8079048.hu2","rb");
+        for (c = 0x0000; c < 0x80000; c += 2)
+        {
+                tandy_rom[c] = getc(f);
+                tandy_rom[c + 1] = getc(ff);
+        }
+        fclose(ff);
+        fclose(f);
+
+        mem_mapping_add(&tandy_rom_mapping, 0xe0000, 0x10000,
+                        tandy_read_rom, tandy_read_romw, tandy_read_roml,
+                        NULL, NULL, NULL,
+                        tandy_rom,  MEM_MAPPING_EXTERNAL, NULL);
+
+        io_sethandler(0xffe8, 0x0008, tandy_rom_bank_read, NULL, NULL, tandy_rom_bank_write, NULL, NULL, NULL);
+        
+        return tandy_rom;
+}
+
+void tandy_rom_close(void *p)
+{
+        free(p);
+}
+
+device_t tandy_rom_device =
+{
+        "Tandy 1000SL/2 ROM",
+        0,
+        tandy_rom_init,
+        tandy_rom_close,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL
+};