mirror of
https://github.com/RevCurtisP/C02.git
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Imported x16.h02 and x16.a02 from master
This commit is contained in:
Curtis F Kaylor
parent
cf56e15c01
commit
b83b345ca4
96
include/x16.a02
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96
include/x16.a02
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@ -0,0 +1,96 @@
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; c02 Program Initialization Code for Commander X16
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; Compatible with x16emu Release 34
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;PETSCII Key Mappings
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DELKEY EQU $14 ;Delete/Backspace Key (Delete)
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ESCKEY EQU $03 ;Escape/Stop Key (RUN/STOP)
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RTNKEY EQU $0D ;Return/Enter Key (RETURN)
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;Zero Page System Variables - x16emu Release 34 Memory Map
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;UNUSED $00-$01 ;Available to User
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; $02-$52 ;Used by Basic graphics commands
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XMBANK EQU $53 ;Extended Memory Bank
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XADRLO EQU $54 ;Ext Memory Address LSB
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XADRHI EQU $55 ;Ext Memory Address MSB
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SRCPTR EQU $56 ;Source Pointer
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SRCLO EQU $57 ;Source Pointer LSB
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SRCHI EQU $58 ;Source Pointer MSB
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DSTPTR EQU $59 ;Destination Pointer
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DSTLO EQU $5A ;Destination Pointer LSB
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DSTHI EQU $5B ;Destination Pointer MSB
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BLKLO EQU $5C ;Block Pointer LSB
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BLKHI EQU $5D ;Block Pointer MSB
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STKLO EQU $5E ;Stack Pointer LSB
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STKHI EQU $5F ;Stack Pointer MSB
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BFRLO EQU $60 ;Buffer Pointer LSB
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BFRHI EQU $61 ;Buffer Pointer MSB
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RANDOM EQU $62 ;Random Number Storage
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RDSEED EQU $63 ;Random Seed
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TEMP0 EQU $64 ;Temporary Variable
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TEMP1 EQU $65 ;Temporary Variable
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TEMP2 EQU $66 ;Temporary Variable
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TEMP3 EQU $67 ;Temporary Variable
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; $68-7F ;Available to User
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; $80-$83 ;Used by Kernal and DOS
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; $A4-$A8 ;Reserved for KERNAL/DOS/BASIC
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; $A9-$FF ;Used by BASIC
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;Other Variables - Top of Extended System RAM Area
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BLKSLO EQU $07F4 ;Block Start LSB
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BLKSHI EQU $07F5 ;Block Start MSB
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BLKELO EQU $07F6 ;Block End LSB
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BLKEHI EQU $07F7 ;Block End MSB
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BLKLEN EQU $07F8 ;Block Length
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STKSAV EQU $07FA ;Machine Stack Storage
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STKSLO EQU $07FC ;Stack Start LSB
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STKSHI EQU $07FD ;Stack Start MSB
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STKELO EQU $07FE ;Stack End LSB
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STKEHI EQU $07FF ;Stack End MSB
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;Machine Language Basic Stub - Same as Commodore 64
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ORG $0801 ;Start of Basic Program
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BASIC: DC $0C, $08 ;Pointer to Next Line
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DC $00, $00 ;Line Number (0)
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DC $9E ;SYS
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DC $20 ;' '
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DC $32, $30, $36 ,$32 ;"2062"
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DC $00 ;End of Line Marker
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DC $00, $00 ;End of Basic Program
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START: TSX ;Get Stack Pointer
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STX STKSAV ;and Save for Exit
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SEC ;Set Screen Mode
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LDA #0 ;to 40x30 Text
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JSR $FF5F ;using SCRMOD
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JMP MAIN ;Execute Program
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EXIT: LDX STKSAV ;Retrieve Saved Stack Pointer
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TXS ;and Restore It
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RTS ;Return to BASIC
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;Poll Keyboard for Character
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POLKEY EQU $FFE4 ;Aliased to Kernal GETIN Routine
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;Get Character from Keyboard
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GETKEY EQU POLKEY ;Aliased to POLKEY Routine
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;Wait for Character from Keyboard
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GETCHR: JSR GETKEY ;Poll Keyboard
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BEQ GETCHR ;If No Key, Loop
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RTS
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;Print Character to Console
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PUTCHR EQU $FFD2 ;Aliased to CHROUT Routine
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;Delete Previous Character
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DELCHR: LDA #DELKEY ;Load Delete Character
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JMP PUTCHR ;Print and Return
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;Advance Character to Next line
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NEWLIN: LDA #RTNKEY ;Load Return Character
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JMP PUTCHR ;Print and Return
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INCLUDE "../include/prbyte.a02" ;PRBYTE and PRHEX routine
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INCLUDE "../include/putstr.a02" ;PUTSTR routine
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45
include/x16.h02
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45
include/x16.h02
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@ -0,0 +1,45 @@
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/* C02 System Header file for Commander X16 */
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/* Platform Specific Settings */
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#pragma zeropage $68 //Unused Zero Page - $68-$7F
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/* Platform Specific Constants */
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#define DELKEY $14 //Delete/Backspace Key (DEL)
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#define ESCKEY $03 //Escape/Break Key (STOP)
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#define RTNKEY $0D //Return/Enter Key (RETURN)
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/* Standard Library Pointers */
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zeropage char srclo,srchi; //Source Pointer for Library Functions
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zeropage char dstlo,dsthi; //String Pointer for Library Functions
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zeropage int srcptr,dstptr; //Source, Destination Pointers
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zeropage char bfrlo,bfrhi; //Buffer Pointer for Library Functions
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zeropage char blklo,blkhi; //Block Segment Pointer
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zeropage char stklo,stkhi; //Stack Pointer
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zeropage char xadrlo,xadrhi; //Physical Address LSB, MSB
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/* Standard Library Variables */
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char blkslo,blkshi; //Block Start Address
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char blkelo,blkehi; //Block End Address
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char blklen; //Block Segment Length
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char stkslo,stkshi; //Stack Start Address
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char stkelo,stkehi; //Stsck End Address
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char random,rdseed; //Pseudo-Random Number Generation
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char temp0,temp1,temp2,temp3; //Temporary Storage
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char xmbank; //Physical Bank
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/* System Subroutines */
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void delchr(); //Delete previous character
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char getkey(); //Read ASCII character from Keyboard
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char getpos(); //Get Cursor Position
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char getsiz(); //Get Screen Size
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void newlin(); //Advance cursor to beginning of next line
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char polkey(); //Poll Keyboard for character
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char putchr(); //Print ASCII character to Keyboard
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void prbyte(); //Print Accumulator as Hexadadecimal number
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void prhex(); //Print Low Nybble of Accumulator as Hex Digit
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char getchr(); //Wait for character from Keyboard
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void setpos(); //Set Cursor Position
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//System Labels
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start: //Start of Code
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exit: //Return to Operating System
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33
include/x16/joystk.a02
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33
include/x16/joystk.a02
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@ -0,0 +1,33 @@
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;Joystick Constants and Functions
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;Non-Functional Skeleton for Systems with No Joystick Support
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JYSTKS EQU 2 ;Number of Joysticks
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JYDATA EQU $02BC ;Joystick 0 Data
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GETJOY EQU $FF06 ;Kernal GETJOY Routine
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;Joystick Bit Masks
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JOYUP EQU $08 ;Up
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JOYDN EQU $04 ;Down
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JOYLF EQU $02 ;Left
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JOYRT EQU $01 ;Right
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JOYB0 EQU $80 ;Button
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;Read Joystick
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JOYSTK: CMP #JYSTKS ;If Invalid Joystick Number
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BCS JOYSTE ; Return ERROR
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STA TEMP0 ;Save Joystick Number
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JSR $FF06 ;Call Kernal GETJOY Routine
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LDA TEMP0 ;Retrieve Joystick Number
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ASL ;Multiply it by 3
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ADC TEMP0 ;(Assumes Number<128)
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TAX ;and Copy to X-Register
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LDA $02BE,X ;If Controller Not Present
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BNE JOYSTE ; Return ERROR
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LDA $02BC,X ;Read Controller Status
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;EOR #$FF ;Invert Bits
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AND #$CF ;and Mask off Select/Start
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RTS
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JOYSTE: LDA #255 ;Return Error Code
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RTS
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24
include/x16/joystk.h02
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24
include/x16/joystk.h02
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/* Joystick Functions for *
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* Commander X-16 Computer */
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#define JYSTKS 2 //Number of Joysticks
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#define JOYUP $08 //Up
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#define JOYDN $04 //Down
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#define JOYLF $02 //Left
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#define JOYRT $01 //Right
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#define JOYB0 $80 //Button
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char jydata[]; //Joystick Data
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/* Poll Joysticks` *
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* Sets: j = Joystick Number *
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* Returns: $FF = Error *
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* No Joysticks */
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void getjoy();
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/* Read Joystick State *
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* Args: j = Joystick Number *
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* Returns: $FF = Error *
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* No Joysticks */
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char joystk();
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360
include/x16/xmemory.a02
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360
include/x16/xmemory.a02
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@ -0,0 +1,360 @@
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; Commander X16 Extended Memory Assembly Langyage Routines for C02
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;Extended Memory Constants
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XLBANK EQU $0F ;Maximum Logical Bank
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;Extended Memory Address - Defined in x16.a02
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; Physical Address Logical Address
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;XMBANK Bank ($00-$FF) Bits 20-13
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;XADRLO Address LSB ($00-$FF) Bits 7- 0
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;XADRHI Address MSB ($A0-$BF) Bits 12- 8
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;VIA Registers
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XSBANK EQU $9F61 ;RAM Bank Select
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;xgetla() - Get Logical Extended Memory Address
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;Destroys: TEMP0
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;Returns: A = Logical Bank ($0-$F$)
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; $FF if Physical Address Invalid
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; Y,X = Logical Address ($0000-$FFFF)
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; Carry Set if Physical Address is Invalid
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XGETLA: JSR XGETPN
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;xclcla(bank,page,byte) - Convert Physical to Logical Address
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;Args: A = Physical Bank ($00,$FF)
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; Y,X = Physical Address ($A000-$BFFF)
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;Destroys: TEMP0
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;Returns: A = Logical Bank ($00-$0F)
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; Y,X = Logical Address ($0000-$000F)
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; Carry Set if Physical Address is Invalid
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XCLCLA: STA TEMP0 ;Save Physical Bank
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TYA ;Get Physical MSB
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AND #$E0 ;Isolate Bits 5-7
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CMP #$A0 ;If Not in Banked RAM Area
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BNE XRCSET ; Return Carry Set
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TYA ;Get Physical MSB
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ASL ;Rotate Bits 8-12 to 11-15
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ASL
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ASL
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LSR TEMP0 ;Rotate Physical Bank
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ROR ;into Logical Bits 13-20
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LSR TEMP0
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ROR
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LSR TEMP0
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ROR
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TAY ;Copy MSB into Y
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LDA TEMP0 ;Load Bank into A
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CLC ;Return Carry Clear
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RTS
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XRCSET: SEC ;Return Carry Set
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RTS
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;xclcpa(bank,page,byte) - Convert Logical to Physical Address
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;Args: A = Logical Bank ($00-$0F)
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; Y,X = Logical Address ($0000-$000F)
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;Destroys: TEMP0
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;Returns: A = Physical Bank ($00,$FF)
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; Y,X = Physical Address ($A000-$BFFF)
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; Carry Set if Logical Address is Invalid
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XCLCPA: CMP #$10 ;If Bank >= 16
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BCS XLPADX ; Return Carry Set
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STA TEMP0 ;Store Logical Bank,LSB,MSB in TEMP0,TEMP1,TEMP2
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TYA ;Get Logical Address MSB
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ASL ;Rotate Logical Bits 13-20 into Physical Bank
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ROL TEMP0
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ASL
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ROL TEMP0
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ASL
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ROL TEMP0
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LSR ;Shift Bits 8-12 back into Position
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LSR
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LSR
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ORA #$A0 ;Convert to Physical MSB
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TAY ;and Copy Back to Y
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LDA TEMP0 ;Load Physical Bank into Accumulator
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XLPADX: RTS
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;xsetla(bank,page,byte) - Set Logical Extended Memory Address
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;Args: A = Logical Bank ($0-$F$)
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; Y,X = Logical Address ($0000-$FFFF)
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;Destroys: TEMP0
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;Returns: A = Physical Bank ($00-$FF)
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; Y,X = Physical Address ($A000-$BFFF)
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XSETLA: JSR XCLCPA ;Convert Logical Address to Physical Address
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BCC XSETPN ;If Valid, Store and Return
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RTS ;Else Return Carry Set
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;xsetpa(bank,page,byte) - Set Physical Extended Memory Address
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;Args: A = Physical Bank ($00-$FF)
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; Y,X = Physical Address ($A000-$BFFF)
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;Destroys: TEMP0
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;Returns: A = Physical Bank ($FF if Address Invalid)
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; Y,X = Physical Address
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; Carry Set if Logical Address is Invalid
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XSETPA: JSR XVALPA ;Validate Physical Address
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BCS XSETPX ;If Invalid, Return Carry Set
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;XSETPn(bank,page,byte) - Set Physical Address without Error Checking
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;Args: A,Y,X = Physical Extended Address
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XSETPN: STA XMBANK ;Store Physical Bank
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STY XADRHI ;Store Physical MSB
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STX XADRLO ;Store Physical LSB
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XSETPX: RTS
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;XGETPA() - Get Physical Extended Memory Address
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;Returns: A = Physical Bank ($FF if Address Invalid)
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; Y,X = Physical Address
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XGETPA: LDA XADRHI ;Load Physical MSB
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AND #$E0 ;Isolate Bits 5-7
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CMP #$A0 ;If Not in Banked RAM Area
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BNE XRCSET ; Return Carry Set
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;xgetpn() - Get Physical Address without Error Checking
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;Returns: A,Y,X = Physical Extended Address
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XGETPN: LDA XMBANK ;Load Physical Bank
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LDY XADRHI ;Load Physical MSB
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LDX XADRLO ;Load Physical LSB
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RTS
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;xvalpa(bank,page,byte) - Validate Physical Extended Address
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;Args: A = Physical Bank ($00-$FF)
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; Y,X = Physical Address ($A000-$BFFF)
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;Returns: Carry Set if Logical Address is Invalid
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XVALPA: CPY #$A0 ;If MSB<$A0
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BCC XRCSET ; Return Carry Set
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CPY #$C0 ;Return Carry Set if MSB>=$C0
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RTS
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;xselrb() - Select Extended RAM Bank
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;Sets: XSBANK to XMBANK
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;Returns: Y = 0
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XSELRB: LDY XMBANK ;Get Physical Bank
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STY XSBANK ;and Select RAM Bank
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LDY #0
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RTS
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;xgetl() - Read Long from Extended Memory
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;Updates: XMBANK, XADRHI, XADRLO - Physical Address
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;Returns: A,Y,X = Bytes Read
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; Carry Set if Address Rolled Over
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XGETL: JSR XGETI ;Read X,Y from Extended Memory
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BRA XGETC ;Read A from Extended Memory
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;xgeti() - Read Word from Extended Memory
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;Updates: XMBANK, XADRHI, XADRLO - Physical Address
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;Affects: A
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;Returns: Y,X = Word Read
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; Carry Set if Address Rolled Over
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XGETI: JSR XGETC ;Read LSB from Extended Memory
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TAX ;and Return in X
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JSR XGETC ;Read MSB from Extended Memory
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TAY ;and Return in Y
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RTS
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;xgetc() - Read Byte from Extended Memory
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;Updates: XMBANK, XADRHI, XADRLO - Physical Address
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;Affects: Y
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;Returns: A = Byte Read
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; Carry Set if Address Rolled Over
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XGETC: JSR XSELRB ;Select Extended RAM Bank
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LDA (XADRLO),Y ;Load Character at Extended Address
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TAY ;Save Character
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JSR XINCPA ;Increment Physical Address
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TYA ;Restore Character
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RTS
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;xload(size) - Load from Extended Memory
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;Args: Y,X = Number of Bytes to Load
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;Requires: DSTLO,DSTHI = Local Memory Start Address
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; XMBANK,XADRHI,XADRLO = Extended Memory Address
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;Destroys: TEMP0
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;Affects: A,X,Y
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XLOAD: STY TEMP0 ;and Store in TEMP0
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JSR XSELRB ;Select Extended RAM Bank
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XLOADL: JSR XREADL ;Read Count LSB Bytes
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LDA TEMP0 ;Load MSB
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BEQ XLOADX ;If Not Zero
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DEC TEMP0 ; Decrement MSB
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BRA XLOADL ; and Read Another 256 Bytes
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XLOADX: RTS
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;xread(n,&dest) - Read Bytes from Extended Memory
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;Args: A = Number of Bytes to Read
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; Y,X = Address of Array to Read Into
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;Sets: DSTLO,DSTHI
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;Updates: XMBANK, XADRHI, XADRLO - Physical Address
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;Affects: A,X,Y
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XREAD: JSR SETDST ;Set Destination to String
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TAX ;Copy Byte Count to X
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JSR XSELRB ;Select Extended RAM Bank
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XREADL: LDA (XADRLO) ;Get Character at Extended Address
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STA (DSTLO) ;Write to Array
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INC DSTLO ;Increment Destination Address
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BNE XREADS
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INC DSTHI
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XREADS: JSR XINCPA ;Increment Physical Address
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DEX ;Increment Counter
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BNE XREADL ;and Loop if Not Zero
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RTS
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;xsave(size) - Save from Extended Memory
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;Args: Y,X = Number of Bytes to Save
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;Requires: SRCLO,SRCHI = Local Memory Start Address
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; XMBANK,XADRHI,XADRLO = Extended Memory Address
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;Destroys: TEMP0
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;Affects: A,X,Y
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XSAVE: STY TEMP0 ;and Store in TEMP0
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JSR XSELRB ;Select Extended RAM Bank
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XSAVEL: JSR XWRITL ;Write Count LSB Bytes
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LDA TEMP0 ;Load MSB
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BEQ XSAVEX ;If Not Zero
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DEC TEMP0 ; Decrement MSB
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BRA XSAVEL ; and Write Another 256 Bytes
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XSAVEX: RTS
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;xwrite(n,&source) - Write Bytes to Extended Memory
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;Args: A = Number of Bytes to Write
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; Y,X = Address of Array to Write From
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;Sets: SRCLO,SRCHI
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;Updates: XMBANK, XADRHI, XADRLO - Physical Address
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;Affects: A,X,Y
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XWRITE: JSR SETSRC ;Set Destination to String
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TAX ;Copy Byte Count to X
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JSR XSELRB ;Select Extended RAM Bank
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XWRITL: LDA (SRCLO)
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STA (XADRLO) ;Get Character at Extended Address
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INC SRCLO ;Increment Destination Address
|
||||
BNE XWRITS
|
||||
INC SRCHI
|
||||
XWRITS: JSR XINCPA ;Increment Physical Address
|
||||
DEX ;Increment Counter
|
||||
BNE XWRITL ;and Loop if Not Zero
|
||||
RTS
|
||||
|
||||
;xswap(size) - Swap with Extended Memory
|
||||
;Args: Y,X = Number of Bytes to Swap
|
||||
;Requires: DSTLO,DSTHI = Local Memory Start Address
|
||||
; XMBANK,XADRHI,XADRLO = Extended Memory Address
|
||||
;Destroys: TEMP0
|
||||
;Affects: A,X,Y
|
||||
XSWAP: STY TEMP0 ;and Store in TEMP0
|
||||
JSR XSELRB ;Select Extended RAM Bank
|
||||
XSWAPL: JSR XCHNGL ;Write Count LSB Bytes
|
||||
LDA TEMP0 ;Load MSB
|
||||
BEQ XSWAPX ;If Not Zero
|
||||
DEC TEMP0 ; Decrement MSB
|
||||
BRA XSWAPL ; and Write Another 256 Bytes
|
||||
XSWAPX: RTS
|
||||
|
||||
;xchng(n,&dest) - Exhange with Bytes in Extended Memory
|
||||
;Args: A = Number of Bytes to Read
|
||||
; Y,X = Address of Array to Read Into
|
||||
;Sets: DSTLO,DSTHI
|
||||
;Updates: XMBANK, XADRHI, XADRLO - Physical Address
|
||||
;Affects: A,X,Y
|
||||
XCHNG: JSR SETDST ;Set Destination to String
|
||||
TAX ;Copy Byte Count to X
|
||||
JSR XSELRB ;Select Extended RAM Bank
|
||||
XCHNGL: LDA (XADRLO) ;Get Character at Extended Address
|
||||
TAY ;and Save It
|
||||
LDA (DSTLO) ;Get Character from Array
|
||||
STA (XADRLO) ;and Store at Extended Address
|
||||
TYA ;Retrieve Original Character
|
||||
STA (DSTLO) ;and Store in Array
|
||||
INC DSTLO ;Increment Destination Address
|
||||
BNE XCHNGS
|
||||
INC DSTHI
|
||||
XCHNGS: JSR XINCPA ;Increment Physical Address
|
||||
DEX ;Increment Counter
|
||||
BNE XCHNGL ;and Loop if Not Zero
|
||||
RTS
|
||||
|
||||
;xputl(nsb,msb,lsb) - Write Long to Extended Memory
|
||||
;Args: A,Y,X = Long to Write
|
||||
;Updates: XMBANK, XADRHI, XADRLO - Physical Address
|
||||
;Affects: Y
|
||||
;Returns: Carry Set if Address Rolled Over
|
||||
XPUTL: PHA ;Save NSB
|
||||
JSR XPUTI ;Write LSB, MSB to Extended Memory
|
||||
PLA ;Retrieve NSB
|
||||
BRA XPUTCN ;and Write to Extended Memory
|
||||
|
||||
;xputi(i) - Write Word to Extended Memory
|
||||
;Args: Y,X = Word to Write
|
||||
;Updates: XMBANK, XADRHI, XADRLO - Physical Address
|
||||
;Affects: A,Y
|
||||
;Returns: Carry Set if Address Rolled Over
|
||||
XPUTI: PHY ;Save MSB
|
||||
TXA ;Get LSB
|
||||
JSR XPUTC ;and Write to Extended Memory
|
||||
PLA ;Retrieve MSB
|
||||
BRA XPUTCN ;and Write to Extended Memory
|
||||
|
||||
;xputc(c) - Write Byte to Extended Memory
|
||||
;Args: A = Integer to Write
|
||||
;Updates: XMBANK, XADRHI, XADRLO - Physical Address
|
||||
;Affects: A,Y
|
||||
;Returns: Carry Set if Address Rolled Over
|
||||
XPUTC: JSR XSELRB ;Select Extended RAM Bank
|
||||
XPUTCN: STA (XADRLO) ;Store Character at Extended Address
|
||||
|
||||
;xincpa() - Increment Physical Extended Address
|
||||
;Updates: XMBANK, XADRHI, XADRLO - Physical Address
|
||||
;Affects: A
|
||||
;Returns: Carry Set if Address Rolled Over
|
||||
XINCPA: CLC ;Preset Carry to Clear
|
||||
INC XADRLO ;Increment Physical LSB
|
||||
BNE XINCPX ;If Zero
|
||||
INC XADRHI ; Increment Physical MSB
|
||||
LDA XADRHI ; Load Physical MSB
|
||||
CMP #$C0 ; If More than Maximum
|
||||
BCC XINCPX
|
||||
LDA #$A0 ; Set MSB to Minimum
|
||||
STA XADRHI
|
||||
INC XMBANK ; Increment Bank
|
||||
LDA XMBANK ; and Write to Bank Select
|
||||
STA XSBANK
|
||||
BNE XINCPX ; If Not Zero
|
||||
CLC ; Return Carry Clear
|
||||
XINCPX: RTS
|
||||
|
||||
;xrdpg(xbank, xpage, mpage) - Read Extended Memory Page
|
||||
XRDPG: STX DSTHI ;Set Destination MSB to Memory Page
|
||||
LDX #0 ;Set Extended Memory LSB to 0
|
||||
STX DSTLO ;Set Destination LSB to 0
|
||||
JSR XCLCPA ;Convert Logical to Physical Address
|
||||
BCS XRDPGX ;If Invalid, Return Carry Set
|
||||
JSR SETSRC ;Set Source Address, Y to 0
|
||||
XRDPGM: STA XSBANK ;Select Extended RAM Bank
|
||||
XRDPGL: LDA (SRCLO),Y ;Read Byte from Extended Memory
|
||||
STA (DSTLO),Y ;and Write to Local Memory
|
||||
INY ;Increment Counter
|
||||
BNE XRDPGL ;and Loop if Not 0
|
||||
XRDPGX: RTS
|
||||
|
||||
;xwrtpg(xbank, xpage, mpage) - Write Extended Memory Page
|
||||
XWRTPG: JSR XSRCPA ;Set Source Address and Physical Address
|
||||
BEQ XRDPGM ;and Copy Bytes
|
||||
|
||||
XSRCPA: STX SRCHI ;Set Destination MSB to Memory Page
|
||||
LDX #0 ;Set Extended Memory LSB to 0
|
||||
STX SRCLO ;Set Destination LSB to 0
|
||||
JSR XCLCPA ;Convert Logical to Physical Address
|
||||
BCS XRDPGX ;If Invalid, Return Carry Set
|
||||
JSR SETDST ;Set Destination to Extended Address
|
||||
LDY #0 ;Set Counter to 0
|
||||
BEQ XRDPGM ;and Copy Bytes
|
||||
|
||||
;xswppg(xbank, xpage, mpage) - Swap with Extended Memory Page
|
||||
XSWPPG: JSR XSRCPA ;Set Source Address and Physical Address
|
||||
STA XSBANK ;Select Extended RAM Bank
|
||||
XSWPPL: LDA (DSTLO),Y ;Read From Local Memory
|
||||
TAX ;and Save Contents
|
||||
LDA (SRCLO),Y ;Read Byte from Extended Memory
|
||||
STA (DSTLO),Y ;and Write to Local Memory
|
||||
TXA ;Retrieve Byte Read from Local Memory
|
||||
LDA (SRCLO),Y ;and Write to Extended Memory
|
||||
INY ;Increment Counter
|
||||
BNE XSWPPL ;and Loop if Not 0
|
||||
RTS
|
||||
115
include/x16/xmemory.h02
Normal file
115
include/x16/xmemory.h02
Normal file
|
|
@ -0,0 +1,115 @@
|
|||
/****************************************
|
||||
* xmemory.h02 - Extended Memory Access *
|
||||
* for Commander X16 *
|
||||
****************************************/
|
||||
|
||||
#define XLBANK $0F //Maximum Logical Bank
|
||||
|
||||
/* Read Byte to Extended Memory *
|
||||
* Returns: char b: Byte Read *
|
||||
* Sets Carry if Address Rolled Over */
|
||||
char xgetc();
|
||||
|
||||
/* Read Word to Extended Memory *
|
||||
* Returns: int i: Word Read *
|
||||
* Sets Carry if Address Rolled Over */
|
||||
int xgeti();
|
||||
|
||||
/* Read Word, Byte to Extended Memory *
|
||||
* Args: char b: Byte Read *
|
||||
* int i: Word Read *
|
||||
* Sets Carry if Address Rolled Over */
|
||||
char xgetl();
|
||||
|
||||
/* Get Logical Extended Address *
|
||||
* Returns: char lbank - Logical Bank *
|
||||
* int laddr - Logical Address *
|
||||
* Sets Carry if Physical Address Invalid */
|
||||
char xgetla();
|
||||
|
||||
/* Get Physical Extended Address *
|
||||
* Returns: char pbank - Physical Bank *
|
||||
* char ppage - Physical Page *
|
||||
* char pbyte - Physical Byte *
|
||||
* Sets Carry if Physical Address Invalid */
|
||||
char xgetpa();
|
||||
|
||||
/* Convert Physical to Logical Address *
|
||||
* Args: char pbank - Physical Bank *
|
||||
* char ppage - Physical Page *
|
||||
* char pbyte - Physical Byte *
|
||||
* Returns: char lbank - Logical Bank *
|
||||
* int laddr - Logical Address *
|
||||
* Sets Carry if Physical Address Invalid */
|
||||
char xclcla();
|
||||
|
||||
/* Increment Physical Address *
|
||||
* Sets Carry if Address Rolled Over */
|
||||
void xincpa();
|
||||
|
||||
/* Convert Logical to Physical Address *
|
||||
* Args: char lbank - Logical Bank *
|
||||
* int laddr - Logical Address *
|
||||
* Returns: char pbank - Physical Bank *
|
||||
* char ppage - Physical Page *
|
||||
* char pbyte - Physical Byte *
|
||||
* Sets Carry if Logical Address Invalid */
|
||||
char xclcpa();
|
||||
|
||||
/* Write Byte to Extended Memory *
|
||||
* Args: char b: Byte to Write *
|
||||
* Sets Carry if Address Rolled Over */
|
||||
void xputc();
|
||||
|
||||
/* Write Word to Extended Memory *
|
||||
* Args: int i: Word to Write *
|
||||
* Sets Carry if Address Rolled Over */
|
||||
void xputi();
|
||||
|
||||
/* Write Word, Byte to Extended Memory *
|
||||
* Args: char b: Byte to Write *
|
||||
* int i: Word to Write *
|
||||
* Sets Carry if Address Rolled Over */
|
||||
void xputl();
|
||||
|
||||
/* Read Extended Memory Page *
|
||||
* Args: char lbank - Logical Bank *
|
||||
* char lpage - Logical Page *
|
||||
* char mpage - Memory Page *
|
||||
* Sets Carry if Logical Bank Invalid */
|
||||
void xrdpg();
|
||||
|
||||
/* Set Logical Extended Address *
|
||||
* Args: char lbank - Logical Bank *
|
||||
* int laddr - Logical Address *
|
||||
* Sets Carry if Logical Address Invalid */
|
||||
void xsetla();
|
||||
|
||||
/* Set Physical Extended Address *
|
||||
* without Error Checking *
|
||||
* Args: char pbank - Physical Bank *
|
||||
* char ppage - Physical Page *
|
||||
* char pbyte - Physical Byte */
|
||||
void xsetpn();
|
||||
|
||||
/* Set Physical Extended Address *
|
||||
* with Error Checking *
|
||||
* Args: char pbank - Physical Bank *
|
||||
* char ppage - Physical Page *
|
||||
* char pbyte - Physical Byte *
|
||||
* Sets Carry if Physical Address Invalid */
|
||||
void xsetpa();
|
||||
|
||||
/* Validate Physical Extended Address *
|
||||
* Args: char pbank - Physical Bank *
|
||||
* char ppage - Physical Page *
|
||||
* char pbyte - Physical Byte *
|
||||
* Sets Carry if Physical Address Invalid */
|
||||
void xvalpa();
|
||||
|
||||
/* Write Extended Memory Page *
|
||||
* Args: char lbank - Logical Bank *
|
||||
* char lpage - Logical Page *
|
||||
* char mpage - Memory Page *
|
||||
* Sets Carry if Logical Bank Invalid */
|
||||
void xwrtpg();
|
||||
Loading…
Reference in New Issue
Block a user