shithub: sms

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Implement ed41 and init sp correctly

--- a/z80.c

+++ b/z80.c

@@ -8,8 +8,9 @@

 #define sysfatal(fmt, ...){printf(fmt"\n", ##__VA_ARGS__); exit(EXIT_FAILURE);}

 uint8_t ipage, intm, z80irq;

-uint16_t ix[2] = {0xFFFF, 0xFFFF};

-uint16_t pc, curpc, sp;

+uint16_t ix[2] = {0xffff, 0xffff};

+uint16_t pc, curpc;

+uint16_t sp = 0xdff0;

 int halt;

 int inplast;

@@ -532,6 +533,7 @@

 		if ((s[rA] & 0x08) != 0) s[rF] |= FLAGX; else s[rF] &= ~FLAGX;

 		if ((s[rA] & 0x20) != 0) s[rF] |= FLAGY; else s[rF] &= ~FLAGY;

 		return 12;

+	case 0x41: z80out(s[rC], s[rB]); return 12;

 	case 0x61: z80out(s[rC], s[rH]); return 12;

 	case 0x69: z80out(s[rC], s[rL]); return 12;

 	case 0x79: z80out(s[rC], s[rA]); return 12;

-- 

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