© Thomas Kunz 2000
SCE 574
74
8088 (cont.)
äUse
of registers
äAX
- accumulator, supports multiply, divide, I/O, decimal arithmetic,
translate
äBX - general, translate, based addressing mode
äCX
- general, string operations, loop control counters
äDX
- general + multiply and divide, indirect I/O
äSP
- stack operations
äBP
- base access
äSI
- string operations (source)
äDI
- string operations (destination)
äSegment
registers used for addressing