z80.asm File Reference

Functions
macro	RunZ80Code (z80CodeAddress)
	Z80 related macros.
macro	PreZ80Code ()
macro	PostZ80Code ()

Function Documentation

RunZ80Code()

macro RunZ80Code

(

z80CodeAddress

)

Z80 related macros.

This module contains macros for running z80 code at request inside 8502 assembly program.

Copyright

MIT Licensed

Date

2023 Prepare 8502 processor for z80 activation. This macro will setup JP instruction and address where Z80 should jump and then activate the processor. It also setup Mmu correctly. At the end, Mmu is set to previous status.

Parameters

[in]

z80CodeAddress

Address where Z80 code is stored

Remarks

Register .A will be changed.

See also

PreZ80Code, PostZ80Code

Note

Use c128lib_RunZ80Code in z80-global.asm

Attention

Code must be preceded with bytes provided from PreZ80Code. Also, the bytes provided by must be added to the code PostZ80Code.

Since

0.2.0

PreZ80Code()

macro PreZ80Code

(

)

Generates z80 pre-code, in order to setup environment for correct z80 code running.

Remarks

Register .A of z80 processor will be changed.

See also

PostZ80Code

Note

Use c128lib_PreZ80Code in z80-global.asm

Attention

This macro must be run before writing the code that will be executed on z80.

Since

0.2.0

PostZ80Code()

macro PostZ80Code

(

)

Generates z80 post-code, in order to guarantee that z80 jumps to routine to reactivate 6502.

Remarks

Register .A of z80 processor will be changed.

See also

PreZ80Code

Note

Use c128lib_PostZ80Code in z80-global.asm

Attention

This macro must be run after writing the code that will be executed on z80.

Since

0.2.0