+static int do_custom(OsRoutine *ed, u8 b3)
+{
+ struct {
+ unsigned int addr;
+ unsigned int size;
+ } d;
+
+ switch (b3)
+ {
+ case 'd':
+ usb_read(ed, &d, sizeof(d));
+ ed->usbWriteByte('k');
+ printf("sending %i bytes from %06x..\n", d.size, d.addr);
+ usb_write(ed, (void *)d.addr, d.size);
+ printf("done.\n");
+ return 1;
+ default:
+ break;
+ }
+
+ return -1;
+}
+
+#define MTYPE_OS 0
+#define MTYPE_MD 1
+#define MTYPE_SSF 2
+#define MTYPE_CD 3
+#define MTYPE_SMS 4
+#define MTYPE_10M 5
+#define MTYPE_32X 6
+
+static int do_run(OsRoutine *ed, u8 b3, int tas_sync)
+{
+ u8 mapper = 0;
+
+ switch (b3)
+ {
+ case 's':
+ mapper = MTYPE_SMS | (7 << 4);
+ break;
+ case 'm':
+ mapper = MTYPE_MD;
+ break;
+ case 'o':
+ mapper = MTYPE_OS;
+ break;
+ case 'c':
+ mapper = MTYPE_CD;
+ break;
+ case '3':
+ mapper = MTYPE_32X;
+ break;
+ 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("syncing and starting mapper %x..\n", mapper);
+
+ while (read16(GFX_CTRL_PORT) & 2)
+ ;
+ ed->VDP_setReg(VDP_MODE1, 0x04);
+ ed->VDP_setReg(VDP_MODE2, 0x44);
+
+ ed->usbWriteByte('k');
+
+ run_game(mapper, tas_sync);
+ /* should not get here.. */
+
+ 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.. */
+}
+