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AltairZ80: i86: Fix bug in AAD instruction.

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Howard M. Harte 2022-11-05 19:46:53 -07:00 • committed by Paul Koning
parent 3bba1bbe14
commit e1d27aa167
1 changed files with 5 additions and 1 deletions
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6
AltairZ80/i86_ops.c
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@ -4121,7 +4121,7 @@ static void i86op_opcD3_word_RM_CL(PC_ENV *m)
/* opcode=0xd4*/ /* opcode=0xd4*/
static void i86op_aam(PC_ENV *m) static void i86op_aam(PC_ENV *m)
{ uint8 a; { uint8 a;
a = fetch_byte_imm(m); /* this is a stupid encoding. */ a = fetch_byte_imm(m);
if (a != 10) if (a != 10)
sim_printf("CPU: " ADDRESS_FORMAT " Error decoding AAM: Expected 0x0a but got 0x%2x.\n", m->Sp_regs.IP.I16_reg.x_reg, a); sim_printf("CPU: " ADDRESS_FORMAT " Error decoding AAM: Expected 0x0a but got 0x%2x.\n", m->Sp_regs.IP.I16_reg.x_reg, a);
/* note the type change here --- returning AL and AH in AX. */ /* note the type change here --- returning AL and AH in AX. */
@ -4132,6 +4132,10 @@ static void i86op_aam(PC_ENV *m)
/* opcode=0xd5*/ /* opcode=0xd5*/
static void i86op_aad(PC_ENV *m) static void i86op_aad(PC_ENV *m)
{ {
uint8 a;
a = fetch_byte_imm(m);
if (a != 10)
sim_printf("CPU: " ADDRESS_FORMAT " Error decoding AAD: Expected 0x0a but got 0x%2x.\n", m->Sp_regs.IP.I16_reg.x_reg, a);
m->R_AX = aad_word(m,m->R_AX); m->R_AX = aad_word(m,m->R_AX);
DECODE_CLEAR_SEGOVR(m); DECODE_CLEAR_SEGOVR(m);
} }