Runge-Kutta-Simulation/AppleX/SYSIO/ZPAGE.H
2015-02-11 19:34:08 +01:00

30 lines
475 B
C

*:ts=8
*
* Copyright (C) 1985 by Manx Software Systems, Inc.
*
* These are set up for the Apple // Dos 3.3
STK EQU $00 ;8 byte stack area
VAL EQU STK
SP EQU STK+2
AFRAME EQU STK+4
FRAME EQU STK+4
LFRAME EQU STK+6
PC EQU STK+6
TREGS equ $08 ;24 byte tmp register area
R0 EQU TREGS+0
R1 EQU TREGS+4
R2 EQU TREGS+8
R3 EQU TREGS+12
R4 EQU TREGS+16
ACC EQU TREGS+20
SEC EQU TREGS+22
REGS EQU $80 ;16 byte user register area
TMP EQU $40 ;4 byte zero page temporary area