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clipper: clipper has two branch delay slots

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Patrick Mackinlay 2022-03-29 15:49:47 +07:00
parent 046b48d39d
commit 70628bc225
1 changed files with 8 additions and 8 deletions
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16
src/devices/cpu/clipper/clipperd.cpp
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@ -154,14 +154,14 @@ offs_t clipper_disassembler::disassemble(std::ostream &stream, offs_t pc, const
case 0x49: util::stream_format(stream, "b%-4s %s", cc[ADDR_R2], address(pc, opcodes)); bytes = 2 + ADDR_SIZE; if (ADDR_R2 != 0) flags |= STEP_COND; break;
#if C400_INSTRUCTIONS
// delayed branches
case 0x4a: util::stream_format(stream, "cdb r%d,(r%d)", R2, R1); bytes = 2; flags |= STEP_COND | step_over_extra(1); break;
case 0x4b: util::stream_format(stream, "cdb r%d,%s", ADDR_R2, address(pc, opcodes)); bytes = 2 + ADDR_SIZE; flags |= STEP_COND | step_over_extra(1); break;
case 0x4c: util::stream_format(stream, "cdbeq r%d,(r%d)", R2, R1); bytes = 2; flags |= STEP_COND | step_over_extra(1); break;
case 0x4d: util::stream_format(stream, "cdbeq r%d,%s", ADDR_R2, address(pc, opcodes)); bytes = 2 + ADDR_SIZE; flags |= STEP_COND | step_over_extra(1); break;
case 0x4e: util::stream_format(stream, "cdbne r%d,(r%d)", R2, R1); bytes = 2; flags |= STEP_COND | step_over_extra(1); break;
case 0x4f: util::stream_format(stream, "cdbne r%d,%s", ADDR_R2, address(pc, opcodes)); bytes = 2 + ADDR_SIZE; flags |= STEP_COND | step_over_extra(1); break;
case 0x50: util::stream_format(stream, "db%-4s (r%d)", cc[R2], R1); bytes = 2; if (R2 != 0) flags |= STEP_COND | step_over_extra(1); break;
case 0x51: util::stream_format(stream, "db%-4s %s", cc[ADDR_R2], address(pc, opcodes)); bytes = 2 + ADDR_SIZE; if (ADDR_R2 != 0) flags |= STEP_COND | step_over_extra(1); break;
case 0x4a: util::stream_format(stream, "cdb r%d,(r%d)", R2, R1); bytes = 2; flags |= STEP_COND | step_over_extra(2); break;
case 0x4b: util::stream_format(stream, "cdb r%d,%s", ADDR_R2, address(pc, opcodes)); bytes = 2 + ADDR_SIZE; flags |= STEP_COND | step_over_extra(2); break;
case 0x4c: util::stream_format(stream, "cdbeq r%d,(r%d)", R2, R1); bytes = 2; flags |= STEP_COND | step_over_extra(2); break;
case 0x4d: util::stream_format(stream, "cdbeq r%d,%s", ADDR_R2, address(pc, opcodes)); bytes = 2 + ADDR_SIZE; flags |= STEP_COND | step_over_extra(2); break;
case 0x4e: util::stream_format(stream, "cdbne r%d,(r%d)", R2, R1); bytes = 2; flags |= STEP_COND | step_over_extra(2); break;
case 0x4f: util::stream_format(stream, "cdbne r%d,%s", ADDR_R2, address(pc, opcodes)); bytes = 2 + ADDR_SIZE; flags |= STEP_COND | step_over_extra(2); break;
case 0x50: util::stream_format(stream, "db%-4s (r%d)", cc[R2], R1); bytes = 2; if (R2 != 0) flags |= STEP_COND | step_over_extra(2); break;
case 0x51: util::stream_format(stream, "db%-4s %s", cc[ADDR_R2], address(pc, opcodes)); bytes = 2 + ADDR_SIZE; if (ADDR_R2 != 0) flags |= STEP_COND | step_over_extra(2); break;
#else
// these instructions are in the C300 documentation, but appear to be replaced in the C400
case 0x4c: util::stream_format(stream, "bf%s (r%d)", R2 == 0 ? "any" : "bad", R1); bytes = 2; flags |= STEP_COND; break;