1
0
mirror of https://github.com/hsoft/collapseos.git synced 2024-12-27 08:08:05 +11:00
collapseos/blk/450
Virgil Dupras 44bcdd4327 Document 8086 asm instructions list
Also, remove needless argtype in CALL and RET
2020-09-25 19:44:32 -04:00

16 lines
521 B
Plaintext

lblchkPS BSET ( CX -> expected size )
AX PS_ADDR MOVxI, AX SP SUBxx, 2 SUBAXI, ( CALL adjust )
AX CX CMPxx,
IFNC, ( we're good ) RET, THEN,
( underflow ) DI 0x06 MOVxm, JMPs, lblexec @ RPCs,
PC 3 - ORG @ 1+ ! ( main )
DX POPx, ( boot drive no ) 0x03 DL MOVmr,
SP PS_ADDR MOVxI, BP RS_ADDR MOVxI,
DI 0x08 MOVxm, ( LATEST )
( HERE begins at CURRENT )
SYSVARS 0x4 ( HERE ) + DI MOVmx,
SYSVARS 0x2 ( CURRENT ) + DI MOVmx,
DI 0x04 ( BOOT ) MOVxm,
JMPn, lblexec @ RPCn, ( execute )