MSM80C86A-10GS 데이터 시트보기 (PDF) - Oki Electric Industry

부품명

상세내역

일치하는 목록

MSM80C86A-10GS

16-Bit CMOS MICROPROCESSOR

Oki Electric Industry 

¡ Semiconductor

MSM80C86A-10RS/GS/JS

Foot Notes: AL = 8-bit accumulator

AX = 18-bit accumulator

CX = Count register

DS = Data segment

ES = Extra segment

Above/below refers to unsigned value

Greater=more positive

Less=less positive (more negative) signed value

If d=1 then “to” reg: If d=0 then “from” reg.

If w=1 then word instruction: If w=0 then byte instruction

If mod=11 then r/m is treated as a REG field

If mod=00 then DISP=0*, disp-low and disp-high are absent

If mod=01 then DISP=disp-low sign-extended to 16 bits, disp-high is absent

If mod=10 then DISP=disp-high: disp-low

If r/m=000 then EA=(BX)+(SI)+DISP

If r/m=001 then EA=(BX)+(DI)+DISP

If r/m=010 then EA=(BP)+(SI)+DISP

If r/m=011 then EA=(BP)+(DI)+DISP

If r/m=100 then EA=(SI)+DISP

If r/m=101 then EA=(DI)+DISP

If r/m=110 then EA=(BP)+DISP*

If r/m=111 then EA=(BX)+DISP

DISP follows 2nd byte of instruction (before data if required)

* except if mod=00 and r/m=110 then EA-disp-high: disp-low

If s:w=01 then 16 bits of immediate data form the operand

If s:w=11 then an immediate data byte is sign extended to form the 16-bit operand

If v=0 then “count”=1:if v=1 then “count” in (CL)

x=don’ t care

z is used for string primitives for comparison with ZF FLAG

SEGMENT OVERRIDE PREFIX

001 reg 110

REG is assigned according to the following table:

16-Bit (w=1)

8-Bit (w=0)

000 AX

000 AL

001 CX

001 CL

010 DX

010 DL

011 BX

011 BL

100 SP

100 AH

101 BP

101 CH

110 SI

110 DH

111 DI

111 BH

Segment

00 ES

01 CS

10 SS

11 DS

Instructions which reference the flag register file as a 16-bit object use the symbol

FLAGS to represent the file:

FLAGS=x:x:x:x:(OF):(DF):(IF):(TF):(SF):(ZF):X:(AF):X:(PF):X:(CF)

32/37

Share Link: