<< Previous | Next >>

LD (pd+d),HL     Load     Rabbit 4000 Instruction
Opcode
Instruction
Clocks
Operation
-- LD (pd+d),HL
11 (2,2,1,3,3)
(pd + d) = L
(pd + d + 1) = H

86 d

LD (PW+d),HL

11 (2,2,1,3,3)

(PW + d) = L
(PW + d + 1) = H

96 d

LD (PX+d),HL

11 (2,2,1,3,3)

(PX + d) = L
(PX + d + 1) = H

A6 d

LD (PY+d),HL

11 (2,2,1,3,3)

(PY + d) = L
(PY + d + 1) = H

B6 d

LD (PZ+d),HL

11 (2,2,1,3,3)

(PZ + d) = L
(PZ + d + 1) = H


Flags ALTD IOI/IOE
S
Z
L/V
C
F
R
SP
S
D
-
-
-
-

Description

Loads the memory location whose address is computed as the sum of pd and the 8-bit signed displacement d with HL.

The address is treated either as a logical address that will be passed through the MMU for translation into a physical address or as a physical address that does not need MMU translation.

If pd is 0xFFFFxxxx, i.e., the upper 16 bits are all ones, it represents a logical address. This is called a "long logical" address. Otherwise, it is a physical address with the low 20 bits or 24 bits being significant (depending on the memory available).


<< Previous | Next >>