GRU
/
yemu
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Add register ADC ocpu instruction

This commit is contained in:
g1n 2022-04-17 12:54:20 +03:00
parent a4775d475c
commit 77bf6696ab
Signed by: g1n
GPG Key ID: 8D352193D65D4E2C
1 changed files with 90 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

90
src/ocpu/ocpu.c
View File

@ -569,6 +569,96 @@ void ocpu_execute() {
}
break;
case INS_ADC_REG:
reg = ocpu_fetch_byte();
switch(reg) {
case REG_AL:
value = match_register(ocpu_fetch_byte());
ocpu.A += (((ocpu.A & 0xFF00) | (value & 0xFF)) + ocpu.CF);
ocpu.AL = ocpu.A & 0xFF;
break;
case REG_AH:
value = match_register(ocpu_fetch_byte());
ocpu.A += ((((value & 0xFF) << 8) | (ocpu.A & 0xFF)) + ocpu.CF);
ocpu.AH = ocpu.A >> 8;
break;
case REG_A:
word_value = match_register(ocpu_fetch_byte());
ocpu.A += (word_value + ocpu.CF);
break;
case REG_BL:
value = match_register(ocpu_fetch_byte());
ocpu.B += (((ocpu.A & 0xFF00) | (value & 0xFF)) + ocpu.CF);
ocpu.BL = ocpu.A & 0xFF;
break;
case REG_BH:
value = match_register(ocpu_fetch_byte());
ocpu.B += ((((value & 0xFF) << 8) | (ocpu.B & 0xFF)) + ocpu.CF);
ocpu.BH = ocpu.B >> 8;
break;
case REG_B:
word_value = match_register(ocpu_fetch_byte());
ocpu.B += (word_value + ocpu.CF);
break;
case REG_CL:
value = match_register(ocpu_fetch_byte());
ocpu.C += (((ocpu.C & 0xFF00) | (value & 0xFF)) + ocpu.CF);
ocpu.CL = ocpu.C & 0xFF;
break;
case REG_CH:
value = match_register(ocpu_fetch_byte());
ocpu.C += ((((value & 0xFF) << 8) | (ocpu.C & 0xFF)) + ocpu.CF);
ocpu.CH = ocpu.C >> 8;
break;
case REG_C:
word_value = match_register(ocpu_fetch_byte());
ocpu.C += (word_value + ocpu.CF);
break;
case REG_DL:
value = match_register(ocpu_fetch_byte());
ocpu.D += (((ocpu.D & 0xFF00) | (value & 0xFF)) + ocpu.CF);
ocpu.DL = ocpu.D & 0xFF;
break;
case REG_DH:
value = match_register(ocpu_fetch_byte());
ocpu.D += ((((value & 0xFF) << 8) | (ocpu.D & 0xFF)) + ocpu.CF);
ocpu.DH = ocpu.D >> 8;
break;
case REG_D:
word_value = match_register(ocpu_fetch_byte());
ocpu.D += (word_value + ocpu.CF);
break;
case REG_EL:
value = match_register(ocpu_fetch_byte());
ocpu.E += (((ocpu.E & 0xFF00) | (value & 0xFF)) + ocpu.CF);
ocpu.EL = ocpu.E & 0xFF;
break;
case REG_EH:
value = match_register(ocpu_fetch_byte());
ocpu.E += ((((value & 0xFF) << 8) | (ocpu.E & 0xFF)) + ocpu.CF);
ocpu.EH = ocpu.E >> 8;
break;
case REG_E:
word_value = match_register(ocpu_fetch_byte());
ocpu.E += (word_value + ocpu.CF);
break;
case REG_FL:
value = match_register(ocpu_fetch_byte());
ocpu.F += (((ocpu.F & 0xFF00) | (value & 0xFF)) + ocpu.CF);
ocpu.FL = ocpu.F & 0xFF;
break;
case REG_FH:
value = match_register(ocpu_fetch_byte());
ocpu.F += ((((value & 0xFF) << 8) | (ocpu.F & 0xFF)) + ocpu.CF);
ocpu.FH = ocpu.F >> 8;
break;
case REG_F:
word_value = match_register(ocpu_fetch_byte());
ocpu.F += (word_value + ocpu.CF);
break;
default:
printf("Wrong register: %02X\n", reg);
return;
}
break;
case INS_INC:
reg = ocpu_fetch_byte();