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collapseos/blk/753
Virgil Dupras 07e50313c7 pcat: separate MBR code and OS code
MBR code now strictly loads OS code into memory and jumps into it.

Now, I've got to consolidate my assembler code, modrm logic is
messed up.
2020-06-13 15:35:16 -04:00

13 lines
414 B
Plaintext

: MOVri, SWAP 0xb0 OR A, A, ;
: MOVrI, SWAP 0xb0 OR A, SPLITB A, A, ;
: MOVsx, 0x8e A, SWAP MODRMrr A, ;
: INT, 0xcd A, A, ;
( no argument, flow ops are special )
: JMP8, 0xeb A, ; : JMP16, 0xe9 A, ; : JZ, 0x74 A, ;
: JMPr, 0xff A, 7 AND 0xe0 OR A, ;
: LODSB, 0xac A, ; : CLI, 0xfa A, ; : HLT, 0xf4 A, ;
: STI, 0xfb A, ;
: ORrr, 0x08 A, MODRMrr A, ;
: XORxx, 0x31 A, MODRMrr A, ;
: CLD, 0xfc A, ; : STD, 0xfd A, ;