collapseos/blk/033

: OP1 CREATE C, DOES> C@ A, ;
0xc3 OP1 RET,        0xfa OP1 CLI,       0xfb OP1 STI,
0xf4 OP1 HLT,        0xfc OP1 CLD,       0xfd OP1 STD,
0x90 OP1 NOP,        0x98 OP1 CBW,
0xf3 OP1 REPZ,       0xf2 OP1 REPNZ,     0xac OP1 LODSB,
0xad OP1 LODSW,      0xa6 OP1 CMPSB,     0xa7 OP1 CMPSW,
0xa4 OP1 MOVSB,      0xa5 OP1 MOVSW,     0xae OP1 SCASB,
0xaf OP1 SCASW,      0xaa OP1 STOSB,     0xab OP1 STOSW,
( no argument, jumps with relative addrs are special )
0xeb OP1 JMPs,       0xe9 OP1 JMPn,      0x74 OP1 JZ,
0x75 OP1 JNZ,        0x72 OP1 JC,        0x73 OP1 JNC,
0xe8 OP1 CALL,

: OP1r CREATE C, DOES> C@ + A, ;
0x40 OP1r INCx,      0x48 OP1r DECx,
0x58 OP1r POPx,      0x50 OP1r PUSHx,
8086asm: tidy up a bit 2020-06-13 16:21:56 -04:00			`: OP1 CREATE C, DOES> C@ A, ;`
Document 8086 asm instructions list Also, remove needless argtype in CALL and RET 2020-09-25 19:39:31 -04:00			`0xc3 OP1 RET, 0xfa OP1 CLI, 0xfb OP1 STI,`
8086asm: tidy up a bit 2020-06-13 16:21:56 -04:00			`0xf4 OP1 HLT, 0xfc OP1 CLD, 0xfd OP1 STD,`
Make br cells 1 byte wide The 1 byte limitation has been effective for a while now, but I hadn't made the move yet, I wanted to see if the limitation would cause me problems. It doesn't. Doing this now slightly facilitates the IY->BC move in z80. Bootstrapping: if you try to recreate the CVM binary from the previous commit with this code, you'll have bootstrapping problems. The first bootstrap will compile a binary with 2-bytes wide cells but branching conditionals that yields 1-byte cells. That's bad. I got around the issue by temporarily inserting a "397 399 LOADR" instruction in cvm/xcomp.fs, right before the xcomp overrides. This way, I force 1-byte cells everywhere on the first compiliation, which then allows me to apply the logic change in cvm/vm.c and have a properly running binary. 2020-07-06 07:27:50 -04:00			`0x90 OP1 NOP, 0x98 OP1 CBW,`
pcat: add PICK and (roll) 2020-06-18 21:21:46 -04:00			`0xf3 OP1 REPZ, 0xf2 OP1 REPNZ, 0xac OP1 LODSB,`
			`0xad OP1 LODSW, 0xa6 OP1 CMPSB, 0xa7 OP1 CMPSW,`
			`0xa4 OP1 MOVSB, 0xa5 OP1 MOVSW, 0xae OP1 SCASB,`
			`0xaf OP1 SCASW, 0xaa OP1 STOSB, 0xab OP1 STOSW,`
pcat: use a far jump to boot into the OS Unless I misunderstood, this is supposed to set CS. This would make all SREG have the same value. This allows us to remove BIN( offset from os.bin. I've tried booting to offset 0, but it didn't seem to work. Let's settle for 0x8000. 512kb of system RAM is way more than we need anyways. 2020-06-13 20:06:51 -04:00			`( no argument, jumps with relative addrs are special )`
8086asm: tidy up a bit 2020-06-13 16:21:56 -04:00			`0xeb OP1 JMPs, 0xe9 OP1 JMPn, 0x74 OP1 JZ,`
pcat: more native words almost there! 2020-06-19 07:26:33 -04:00			`0x75 OP1 JNZ, 0x72 OP1 JC, 0x73 OP1 JNC,`
Document 8086 asm instructions list Also, remove needless argtype in CALL and RET 2020-09-25 19:39:31 -04:00			`0xe8 OP1 CALL,`
pcat: implement execute and nativeWord 2020-06-14 15:27:26 -04:00
pcat: begin implementing find Not comparing strings yet. Without asm tooling support, it's a big chunk to swallow at once. It's progressing well! 2020-06-14 21:52:58 -04:00			`: OP1r CREATE C, DOES> C@ + A, ;`
			`0x40 OP1r INCx, 0x48 OP1r DECx,`
			`0x58 OP1r POPx, 0x50 OP1r PUSHx,`