IBM PD78081 Manual Do Utilizador

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General Registers

32 

×

 8 bits

Internal ROM

16384 

×

 8 bits

Unusable

Internal High-speed RAM

384 

×

 8 bits

Special Function 
Registers (SFRs)

256 

×

 8 bits

SFR Addressing

Register Addressing

Short Direct 
Addressing

Direct Addressing

Register Indirect
Addressing

Based Addressing

Based Indexed
Addressing

F F 2 0 H
F F 1 F H

F F 0 0 H
FEFFH

FEE0H
FEDFH

F E 2 0 H
FE1FH

FD80H
FD7FH

4 0 0 0 H
3 F F F H

FFFFH

0 0 0 0 H