Miroirs/mame
1
0
Fork 0
mirror of https://github.com/mamedev/mame.git synced 2024-11-16 07:48:32 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

upd78k2: Correct decoding of ROR4 and ROL4 in disassembler

Browse source
This commit is contained in:
AJR 2024-04-01 19:15:35 -04:00
parent 665c0048cd
commit c61a23e0dd
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/devices/cpu/upd78k/upd78k2d.cpp
View file

@ -14,7 +14,7 @@ offs_t upd78k2_disassembler::dasm_01xx(std::ostream &stream, u8 op2, offs_t pc,
if (op2 == 0x05) if (op2 == 0x05)
{ {
u8 op3 = opcodes.r8(pc + 2); u8 op3 = opcodes.r8(pc + 2);
if ((op3 & 0xed) == 0x89) if ((op3 & 0xed) == 0x8c)
{ {
util::stream_format(stream, "%-8s&[%s]", BIT(op3, 4) ? "ROL4" : "ROR4", BIT(op3, 1) ? "HL" : "DE"); util::stream_format(stream, "%-8s&[%s]", BIT(op3, 4) ? "ROL4" : "ROR4", BIT(op3, 1) ? "HL" : "DE");
return 3 | SUPPORTED; return 3 | SUPPORTED;
@ -127,7 +127,7 @@ offs_t upd78k2_disassembler::dasm_05xx(std::ostream &stream, u8 op2, offs_t pc,
util::stream_format(stream, "%-8s%s", BIT(op2, 4) ? "CALL" : "BR", s_rp_names[(op2 & 0x06) >> 1]); util::stream_format(stream, "%-8s%s", BIT(op2, 4) ? "CALL" : "BR", s_rp_names[(op2 & 0x06) >> 1]);
return 2 | (BIT(op2, 4) ? STEP_OVER : 0) | SUPPORTED; return 2 | (BIT(op2, 4) ? STEP_OVER : 0) | SUPPORTED;
} }
else if ((op2 & 0xed) == 0x89) else if ((op2 & 0xed) == 0x8c)
{ {
util::stream_format(stream, "%-8s[%s]", BIT(op2, 4) ? "ROL4" : "ROR4", BIT(op2, 1) ? "HL" : "DE"); util::stream_format(stream, "%-8s[%s]", BIT(op2, 4) ? "ROL4" : "ROR4", BIT(op2, 1) ? "HL" : "DE");
return 2 | SUPPORTED; return 2 | SUPPORTED;