IBM 5150 Technical Reference

Arithmetic
ADD = Add
Register/memory with register to either
o 0 0 0 0 0 d w 1 mod reg rim
Immediate to register/memory
1 0 0 0 0 0 s w 1 mod 0 0 0
rim data dataifs:w=01
Immediate to accumulator
0000010wl
data data if w = 1
ADC = Add with carry
Register /memory
with register to either
o 0 0 1 0 0 d w I mod reg rim
Immediate to register/memory
1 0 0 0 0 0 s w 1 mod 0 1 0
rim data data if s:w = 01
Immediate
to accumulator
0001010w
data
data
if w = 1
INC = Increment
Register /Memory
1 1 1 1 1 1 1 w mod 0 0 0 rim
Register
o 1 0 0 0 reg
AAA = ASCII adjust for add
001101111
DAA = Decimal adjust for add
001001111
SUB = Subtract
Register/memory and register
to either
o 0 1 0 1 0 d w I mod reg rim
Immediate from register/memory
1 0 0 0 0 0 s w
I mod 1 0 1 rim data dataifs:w=01
Immediate from accumulator
0010110w
data
data
ifw= 1
6-8 Instruction Set

IBM 5150 Specifications

General

Brand	IBM
Model	5150
Category	Desktop
Language	English