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collapseos/blk/814
Virgil Dupras 650481f849 z80/8086: extract 2>R code from stable ABI zone
Only its jump at 0x33 remains.

I've also fixed a strange offset oddity in 8086's (n) placement.
It was off by 2, but strangely, it ran properly. Anyway, now it's
fixed.
2020-07-05 08:03:15 -04:00

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CODE ROT ( a b c -- b c a ) 3 chkPS,
CX POPx, BX POPx, AX POPx,
BX PUSHx, CX PUSHx, AX PUSHx,
;CODE
CODE DUP 1 chkPS, AX POPx, AX PUSHx, AX PUSHx, ;CODE
CODE ?DUP 1 chkPS, AX POPx, AX AX ORxx, AX PUSHx,
IFNZ, AX PUSHx, THEN, ;CODE
CODE DROP 1 chkPS, AX POPx, ;CODE
CODE SWAP AX POPx, BX POPx, AX PUSHx, BX PUSHx, ;CODE
CODE OVER ( a b -- a b a ) 2 chkPS,
DI SP MOVxx, AX [DI] 2 MOVx[]+, AX PUSHx, ;CODE
CODE PICK
DI POPx, DI SHLx1, ( x2 )
CX DI MOVxx, CX 2 ADDxi, CALLn, lblchkPS @ RPCn,
DI SP ADDxx, DI [DI] MOVx[], DI PUSHx,
;CODE