6bdbf89ebc
CONSOLIDATION.md Phase 6. Both lived untracked in the project root -- on one
disk, backed up by nothing.
tools/ppc-manual/ 393 files, 3.7 MB. 455 instructions, 350 family pages,
598 mnemonics resolvable through index.json, plus the
generator that produced them.
tools/run-canary.sh the oracle launcher.
🔴 THE LAUNCHER WAS BROKEN IN TWO WAYS AND IS REWRITTEN, not copied:
* it pointed at `xenia-rs/sylpheed.iso`, a SYMLINK. Wine cannot resolve one
and says "path invalid", which reads as a corrupt image rather than a path
problem -- it has cost a session before. It now points at the real file and
warns if handed a symlink.
* it hardcoded one machine's absolute paths, and named `xenia-rs`, which this
consolidation retires. Now derived from the script's own location, with
SYLPH_CANARY_BIN / SYLPH_ISO overrides and a check that each exists.
The standing constraints are in its header where someone will read them: one
emulator at a time, Canary runs MUTED, and never judge a crash or a hang from
a Bash-launched run -- a SIGKILL that looked like the binary was the editor's
process supervisor.
⚠️ The manual's GENERATOR reads the xenia-rs source tree, which is going away.
Its decoder now lives here as crates/sylpheed-ppc, so the generator must be
repointed before it is run again. Recorded in the README rather than left for
someone to discover; the manual's content is checked in and regenerates from
nothing implicitly.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2.2 KiB
2.2 KiB
Form XO — XO — Extended, Overflow (ALU with OE/Rc)
Bit Layout
| Bits | Field | Meaning |
|---|---|---|
| 0–5 | OPCD |
primary opcode (31) |
| 6–10 | RT |
destination GPR |
| 11–15 | RA |
source A |
| 16–20 | RB |
source B |
| 21 | OE |
overflow-enable flag |
| 22–30 | XO |
extended opcode (9 bits) |
| 31 | Rc |
record-form flag |
Instructions Using This Form
| Mnemonic | Opcode | Group | Description |
|---|---|---|---|
subfcx |
0x7c000010 |
integer | Subtract From Carrying |
mulhdux |
0x7c000012 |
integer | Multiply High Doubleword Unsigned |
addcx |
0x7c000014 |
integer | Add Carrying |
mulhwux |
0x7c000016 |
integer | Multiply High Word Unsigned |
subfx |
0x7c000050 |
integer | Subtract From |
mulhdx |
0x7c000092 |
integer | Multiply High Doubleword |
mulhwx |
0x7c000096 |
integer | Multiply High Word |
negx |
0x7c0000d0 |
integer | Negate |
subfex |
0x7c000110 |
integer | Subtract From Extended |
addex |
0x7c000114 |
integer | Add Extended |
subfzex |
0x7c000190 |
integer | Subtract From Zero Extended |
addzex |
0x7c000194 |
integer | Add to Zero Extended |
subfmex |
0x7c0001d0 |
integer | Subtract From Minus One Extended |
mulldx |
0x7c0001d2 |
integer | Multiply Low Doubleword |
addmex |
0x7c0001d4 |
integer | Add to Minus One Extended |
mullwx |
0x7c0001d6 |
integer | Multiply Low Word |
addx |
0x7c000214 |
integer | Add |
divdux |
0x7c000392 |
integer | Divide Doubleword Unsigned |
divwux |
0x7c000396 |
integer | Divide Word Unsigned |
divdx |
0x7c0003d2 |
integer | Divide Doubleword |
divwx |
0x7c0003d6 |
integer | Divide Word |