Category : Assembly Language Source Code
Archive   : DIS86216.ZIP
Filename : OPV20.ASM

;
; opV20
;
; V20 instructions
;
; For disassembly in 16 bit mode
;
code2seg segment
farroutine proc far
mov ax,4c00H
int 21H ; if this file is executed, just terminate
farroutine endp
;
code2seg ends
;
dataseg segment
alpha dw 0
nearindirect dw beta
farindirect dd farroutine
dataseg ends
;
codeseg segment
;
assume ds:dataseg
assume es:nothing
assume ss:nothing
assume cs:codeseg
;
beta proc near
ret
ret 3
beta endp
;
; ensure disassembler synchronization
;
nop
nop
nop
nop
nop
nop
nop
nop
nop
;
; 80186 & V20 instructions
;
db 62h,0 ;bound
db 0c8h,33h,44h,5 ;enter procedure
db 69h,0,33h,44h ;imul immediate
db 69h,0c0h,33h,44h ;imul immediate
db 6bh,0,33h ;imul immediate
db 6bh,0c0h,33h ;imul immediate
db 6ch ;ins dx
db 0f2h,6ch ;ins dx repeated by count in cx
db 0c9h ;leave procedure
db 6eh ;outs dx
db 0f2h,6eh ;outs dx repeated by count in cx
db 61h ;popa
db 68h,33h,44h ;push immediate
db 6ah,33h ;push immediate
db 60h ;pusha
db 0c0h,00h,3 ;ROL memory by count
db 0c0h,08h,3 ;ROR memory by count
db 0c0h,10h,3 ;RCL memory by count
db 0c0h,18h,3 ;RCR memory by count
db 0c0h,20h,3 ;SHL/SAL memory by count
db 0c0h,28h,3 ;SHR memory by count
db 0c0h,38h,3 ;SAR memory by count
;
db 90H,90H,90H,90H,90H,90H,90H,90H,90H ; alignment

;
; V20 unique instructions
;
db 0fh,20h ;add4s
db 0fh,12h,0c0h ;clr1 reg8,cl
db 0fh,12h,000h ;clr1 mem8,cl
db 0fh,13h,0c0h ;clr1 reg16,cl
db 0fh,13h,000h ;clr1 mem16,cl
db 0fh,1ah,0c0h,3 ;clr1 reg8,imm3
db 0fh,1ah,000h,3 ;clr1 mem8,imm3
db 0fh,1bh,0c0h,3 ;clr1 reg16,imm4
db 0fh,1bh,000h,3 ;clr1 mem16,imm4
db 0fh,26h ;cmp4s
db 0fh,33h,0c0h ;ext bit field
db 0fh,3bh,0c0h,3 ;ext bit field immediate
db 66h,0c0h ;fp02
db 66h,000h ;fp02
db 0fh,31h,0c0h ;insert bit field
db 0fh,39h,0c0h,3 ;insert bit field immediate
db 0fh,16h,0c0h ;not1 reg8,cl
db 0fh,16h,000h ;not1 mem8,cl
db 0fh,17h,0c0h ;not1 reg16,cl
db 0fh,17h,000h ;not1 mem16,cl
db 0fh,1eh,0c0h,3 ;not1 reg8,imm3
db 0fh,1eh,000h,3 ;not1 mem8,imm3
db 0fh,1fh,0c0h,3 ;not1 reg16,imm4
db 0fh,1fh,000h,3 ;not1 mem16,imm4
db 65h ;repc
db 64h ;repnc
db 0fh,28h,0c0h ;rol4
db 0fh,28h,000h ;rol4
db 0fh,2ah,0c0h ;ror4
db 0fh,2ah,000h ;ror4
db 0fh,14h,0c0h ;set1 reg8,cl
db 0fh,14h,000h ;set1 mem8,cl
db 0fh,15h,0c0h ;set1 reg16,cl
db 0fh,15h,000h ;set1 mem16,cl
db 0fh,1ch,0c0h,3 ;set1 reg8,imm3
db 0fh,1ch,000h,3 ;set1 mem8,imm3
db 0fh,1dh,0c0h,3 ;set1 reg16,imm4
db 0fh,1dh,000h,3 ;set1 mem16,imm4
db 0fh,22h ;sub4s
db 0fh,10h,0c0h ;test1 reg8,cl
db 0fh,10h,000h ;test1 mem8,cl
db 0fh,11h,0c0h ;test1 reg16,cl
db 0fh,11h,000h ;test1 mem16,cl
db 0fh,18h,0c0h,3 ;test1 reg8,imm3
db 0fh,18h,000h,3 ;test1 mem8,imm3
db 0fh,19h,0c0h,3 ;test1 reg16,imm4
db 0fh,19h,000h,3 ;test1 mem16,imm4
;
codeseg ends
;

end