*((volatile u16 *) (a))
#define read32(a) \
*((volatile u32 *) (a))
+#define write8(a, d) \
+ *((volatile u8 *) (a)) = (d)
#define write16(a, d) \
*((volatile u16 *) (a)) = (d)
#define write32(a, d) \
return d; // wrong..
}
+static u8 gethex(char c)
+{
+ if ('0' <= c && c <= '9')
+ return c - '0';
+ if ('a' <= c && c <= 'f')
+ return c - 'a' + 10;
+ if ('A' <= c && c <= 'F')
+ return c - 'A' + 10;
+ return 0;
+}
+
static const char *exc_names[] = {
NULL,
NULL,
case 'M':
mapper = MTYPE_10M;
break;
+ case 'n':
+ // raw numer: hex XX: mtype | x;
+ // x: bits [4-7]: SRAM_ON, SRAM_3M_ON, SNAP_SAVE_ON, MKEY
+ mapper = gethex(ed->usbReadByte()) << 4;
+ mapper |= gethex(ed->usbReadByte());
+ break;
default:
return -1;
}
- printf("starting mapper %x..\n", mapper);
+ printf("syncing and starting mapper %x..\n", mapper);
while (read16(GFX_CTRL_PORT) & 2)
;
return -1;
}
+void setup_z80(void)
+{
+ u8 *mem = (u8 *)0xa00000;
+ int i;
+
+ write8(0xa11100, 1);
+ write8(0xa11200, 1);
+
+ while (read8(0xa11100) & 1)
+ ;
+
+ /* must use byte access */
+ for (i = 0x2000; i > 0; i--)
+ *mem++ = 0;
+
+ /* console starts with reset on, busreq off,
+ * gens starts with busreq on, keep that for gmv.. */
+}
+
int main()
{
OsRoutine *ed;
ed = (OsRoutine *) *(u32 *)0x1A0;
ed->memInitDmaCode();
+ /* setup VDP */
+ while (read16(GFX_CTRL_PORT) & 2)
+ ;
+
ed->VDP_setReg(VDP_MODE1, 0x04);
ed->VDP_setReg(VDP_MODE2, 0x64);
ed->VDP_setReg(VDP_AUTOINC, 2);
/* note: relying on ED menu's font setup here.. */
printf("\n");
- printf("version: %02x, start_hvc: %04x\n",
- read8(0xa10001), start_hvc);
+ printf("version: %02x, hvc: %04x %04x\n",
+ read8(0xa10001), start_hvc, read16(0xc00008));
printf("ED os/fw: %d/%d\n\n", ed->osGetOsVersion(),
ed->osGetFirmVersion());
+ setup_z80();
+
for (;;) {
if (!ed->usbRdReady()) {
/* note: stop corrupts SDRAM */