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eZ80

CPU

User Manual

UM007714-0908 CPU Instruction Set

116

Condition Bits Affected

None.

Attributes

1 .IS The starting Program Counter is PC[23:0]. Push the 2

LS bytes of the return address, PC[15:0], onto the

{MBASE, SPS} stack. Push the MS byte of the return

address, PC[23:16], onto the SPL stack. Push a 03h

byte onto the SPL stack, indicating a call from ADL

mode (because ADL = 1). Reset ADL mode bit to 0.

Load a 2-byte logical address {mm, nn} from the

instruction into PC[15:0]. The ending Program Counter

is {MBASE, PC[15:0]} = {MBASE, mm, nn}.

0 .IL The starting Program Counter is {MBASE, PC[15:0]}.

Push the 2-byte logical return address, PC[15:0], onto

the SPL stack. Push a 02h byte onto the SPL stack,

indicating a call from Z80 mode (because ADL = 0). Set

the ADL mode bit to 1. Load the 3-byte address {MM,

mm, nn} from the instruction into PC[23:0]. The ending

Program Counter is PC[23:0] = {MM, mm, nn}.

1 .IL The starting Program Counter is PC[23:0]} Push the 3-

byte return address, PC[23:0], onto the SPL stack. Push

a 03h byte onto the SPL stack, indicating a call from

ADL mode (because ADL = 1). The ADL mode bit

remains set to 1. Load a 3-byte address {MM, mm, nn}

from the instruction into PC[23:0]. The ending Program

Counter is PC[23:0] = {MM, mm, nn}.

Mnemonic Operand ADL Mode Cycle Opcode (hex)

CALL mn 05CD, nn, mm

CALL Mmn 17CD, nn, mm, MM

CALL.IS mn 0740, CD, nn, mm

CALL.IS mn 1849, CD, nn, mm

CALL.IL Mmn 0852, CD, nn, mm, MM

CALL.IL Mmn 195B, CD, nn, mm, MM

Table 49. Detail of the CALL Mmn Instruction

ZiLOG eZ80 User Manual

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