Dr. Christian Giessen 9a82c4d522 Verify and fix gap types against assembler output ...

Assembler-verified and fixed:
- Type 12: XOP field corrected to bits10-8 (was bits11-9)
- Type 14: SF=4bits, XREG uses reg0[] not xop_shift[] (was 3-bit OOB)
- Type 16: XREG uses reg0[] (was xop_shift[], 4-bit index OOB)
- Type 19: I-reg field at bits3-2 (was bits1-0), now correct for jump(i2)
- Type 26: Push/Pop encoding is 10/11 not 01/10;
  PPP=bits6-5, LPP=bits4-3 (was bits6-4, bits3-2)
  All 6 variants verified: push/pop sts, loop, pc

Assembler-verified unchanged:
- Type 21/21a: MODIFY correct
- Type 23/24: DIVQ/DIVS correct
- Type 29: DM immediate modify read/write correct
- Type 32: Any Reg <-> DM read/write correct
- Type 34/35: IO/System register read/write correct
- Type 36: LJUMP 2-word correct
- Type 37: SETINT/CLRINT correct

Remaining note: Type 12 SF field may use a different mapping
than sf_names[] for combined shift+memory ops (ASHIFT encodes
as SF=2 not SF=4). Needs further investigation.

2026-04-22 20:16:30 +00:00

1.3 KiB

Raw Permalink Blame History

View Raw