collapseos/blk/042
Virgil Dupras b21be43535 Move 8086 assembler from B730 to B30
Also, move doc to doc/asm.txt.

Also, fix the pcat recipe which was broken since the overlay change.
I hadn't noticed it because I didn't have to rebuild the MBR.
2020-09-21 19:24:54 -04:00

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: FWRs BSET 0 A, ;
: FSET @ THEN, ;
( : BREAK, FJR, 0x8000 OR ;
: BREAK?, DUP 0x8000 AND IF
0x7fff AND 1 ALLOT THEN, -1 ALLOT
THEN ; )
: RPCs, PC - 1- DUP 128 + 0xff > IF ABORT" PC ovfl" THEN A, ;
: RPCn, PC - 2- A,, ;
: AGAIN, ( BREAK?, ) RPCs, ;
( Use RPCx with appropriate JMP/CALL op. Example:
JMPs, 0x42 RPCs, or CALLn, 0x1234 RPCn, )