This should be #included in all files. More...

#include "ti83plus.h"

Macros
Global omni-present constants
#define	aSaveA DEFB 0x08
	ex af, af'

#define	SP_STORE 0x980C
	Stack pointer temp.

#define	spriteTemp 0x84F3
	Also used for storing the stack pointer.

function macros
#define	clearScreen() bcall(0x4540)
	Clears the screen.

#define	bcall(__LABEL__) __asm__("rst 40") ; __asm__("defw\t"#__LABEL__)
	Call System routine.

#define	bjump(__LABEL__) __asm__("call 0x50") ; __asm__("defw\t"#__LABEL__)
	Jump to System routine.

#define	abcall(__LABEL__)
	The asm for a bcall.

#define	lastPressedKey() ((char)(kbdScanCode))
	Get last pressed key.

#define	scanKeys() bcall(0x4015)
	Scan for pressed keys.

Safe Memory Areas
#define	saferam1 0x9872
	768 bytes (APDRAM)

#define	saferam2 0x8A3A
	531 bytes (statRAM)

#define	saferam3 0x8508
	128 bytes (textMem)

#define	saferam4 0x8478
	66 bytes (Op registers, use with caution)

#define	saferam5 0x8251
	8 bytes (bootTemp)

Detailed Description

This should be #included in all files.

This file #defines all required constants, and loads in "ti83plus.h" for other constants that are needed. Only defines stuff at compile time, no real functions, no extra bytes.

Macro Definition Documentation

◆ abcall

#define abcall ( __LABEL__ )

Value:

rst 40 \ \

defw __LABEL__

The asm for a bcall.

◆ aSaveA

#define aSaveA DEFB 0x08

ex af, af'

Machine code to swap af and shadow af and only takes 4 t-states, only use in asm

◆ bcall

#define bcall ( __LABEL__ ) __asm__("rst 40") ; __asm__("defw\t"#__LABEL__)

Call System routine.

Preforms a bcall while in C. And keep in mind that a bcall might modify registers, meaning that any bcall can corrupt any C variable For most bcall values click here, or see TI's system routines document

◆ bjump

#define bjump ( __LABEL__ ) __asm__("call 0x50") ; __asm__("defw\t"#__LABEL__)

Jump to System routine.

Like a bcall() but jumps instead of calls

◆ lastPressedKey

#define lastPressedKey ( ) (*(char*)(kbdScanCode))

Get last pressed key.

Rrequires scanKeys() with custom interupts

◆ scanKeys

#define scanKeys ( ) bcall(0x4015)

Scan for pressed keys.

Manually scan for pressed key, only needed with custom interupts

◆ SP_STORE

#define SP_STORE 0x980C

Stack pointer temp.

Used to store the stack pointer in several functions, if you are writing some assembly, feel free to use this. But not for long-term storage as it is writen to by multiple functions.

Macros