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LD (pd+d),HL     Load     Rabbit 4000/5000 Instruction

Opcode
Instruction
Operation
-- LD (pd+d),HL (pd + d) = L
(pd + d + 1) = H
86 d LD (PW+d),HL (PW + d) = L
(PW + d + 1) = H
96 d LD (PX+d),HL (PX + d) = L
(PX + d + 1) = H
A6 d LD (PY+d),HL (PY + d) = L
(PY + d + 1) = H
B6 d LD (PZ+d),HL (PZ + d) = L
(PZ + d + 1) = H

8-Bit Access
16-Bit Unaligned
16-Bit Aligned
Rabbit 4000
11
n/a
n/a
Rabbit 5000
12
12
11

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).


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