Applecorn/applecorn.s

* APPLECORN.S
* (c) Bobbi 2021 GPLv3
*
* Load an Acorn BBC Micro ROM in aux memory and
* Provide an environment where it can run
*
* Assembled with the Merlin 8 v2.58 assembler on Apple II.

* 14-Oct-2021 XF2MAIN, ENTAUX no longer save/restore STRTL/STRTH.


            XC                ; 65c02
            ORG   $2000       ; Load addr of loader in main memory
                              ; Clear of first HGR frame buffer

* Monitor routines
BELL        EQU   $FBDD
PRBYTE      EQU   $FDDA
COUT1       EQU   $FDED
CROUT       EQU   $FD8E
IDROUTINE   EQU   $FE1F
HOME        EQU   $FC58
AUXMOVE     EQU   $C311
XFER        EQU   $C314

* Monitor ZP locations
A1L         EQU   $3C
A1H         EQU   $3D
A2L         EQU   $3E
A2H         EQU   $3F
A3L         EQU   $40         ; Used for ISR only
A3H         EQU   $41         ; Used for ISR only
A4L         EQU   $42
A4H         EQU   $43

* Used by XFER
STRTL       EQU   $3ED
STRTH       EQU   $3EE

* Apple II BREAK vector
BREAKV      EQU   $3F0

* Reset vector (2 bytes + 1 byte checksum)
RSTV        EQU   $3F2
PWRDUP      EQU   $3F4

* IRQ vector
A2IRQV      EQU   $3FE

* ProDOS Global Page equates
* MLI entry point
MLI         EQU   $BF00
* Device Addresses
DEVADR01    EQU   $BF10
DEVADR32    EQU   $BF26
* Device List
DEVNUM      EQU   $BF30
DEVCNT      EQU   $BF31
DEVLST      EQU   $BF32
* Date & time
PRODOSDATE  EQU   $BF90
PRODOSTIME  EQU   $BF92
* Machine ID byte
MACHID      EQU   $BF98
* Versioning bytes
IBAKVER     EQU   $BFFC
IVERSION    EQU   $BFFD
* System BitMap locations
P8BMAP0007  EQU   $BF58
P8BMAP080F  EQU   $BF59
P8BMAP2027  EQU   $BF5C
P8BMAP282F  EQU   $BF5D
P8BMAP3037  EQU   $BF5E
P8BMAP383F  EQU   $BF5F

*Hardware I/O locations
KEYBOARD    EQU   $C000
80STOREOFF  EQU   $C000
80STOREON   EQU   $C001	      ; Currently not used
RDMAINRAM   EQU   $C002
RDCARDRAM   EQU   $C003
WRMAINRAM   EQU   $C004
WRCARDRAM   EQU   $C005
SETSTDZP    EQU   $C008
SETALTZP    EQU   $C009
CLR80VID    EQU   $C00C
SET80VID    EQU   $C00D
CLRALTCHAR  EQU   $C00E
SETALTCHAR  EQU   $C00F
RDRAMRD     EQU   $C013
RDRAMWR     EQU   $C014
KBDSTRB     EQU   $C010
RDVBL       EQU   $C019
RD80VID     EQU   $C01F

TBCOLOR     EQU   $C022       ; GS-specific, used but commented out
NEWVIDEO    EQU   $C029       ; GS-specific, new video register

SPKR        EQU   $C030
CLOCKCTL    EQU   $C034       ; GS-specific, Clock control register
SHADOW      EQU   $C035       ; GS-specific, Shadow Register
CYAREG      EQU   $C036       ; GS-specific, CYA Register

GRON        EQU   $C050
TEXTON      EQU   $C051
FULLGR      EQU   $C052
MIXGRTXT    EQU   $C053       ; Currently not used
PAGE1       EQU   $C054
PAGE2       EQU   $C055
LORES       EQU   $C056       ; Currently not used
HIRES       EQU   $C057
AN0OFF      EQU   $C058
AN0ON       EQU   $C059
AN1OFF      EQU   $C05A
AN1ON       EQU   $C05B
AN2OFF      EQU   $C05C
AN2ON       EQU   $C05D
AN3OFF      EQU   $C05E
AN3ON       EQU   $C05F

BUTTON0     EQU   $C061
BUTTON1     EQU   $C062

ROMIN       EQU   $C081
LCBANK1     EQU   $C08B


* IO Buffer for reading file (1024 bytes)
IOBUF0      EQU   $0C00       ; For loading/saving, OSFILE, *.
IOBUF1      EQU   $1000       ; Four open files for langs
IOBUF2      EQU   $1400
IOBUF3      EQU   $1800
IOBUF4      EQU   $1C00

* 512 byte buffer sufficient for one disk block
BLKBUF      EQU   $9000       ; Can't use $400 as ProDOS uses
BLKBUFEND   EQU   $9200       ;  'hidden' bytes within screen

* 512 byte buffer for file copy (*COPY)
COPYBUF     EQU   $9200       ; File copy needs separate buffer
*COPYBUFEND  EQU   $9400

* Location of FDraw library in main memory
FDRAWADDR   EQU   $9400

* Location of FDraw library in main memory
FONTADDR    EQU   $A900

* Address in aux memory where ROM will be loaded
ROMAUXADDR  EQU   $8000

* Address in aux memory where the MOS shim is located
AUXMOS1     EQU   $2000       ; Temp staging area in Aux
EAUXMOS1    EQU   $5000       ; End of staging area
AUXMOS      EQU   $D000       ; Final location in aux LC

* Called by code running in main mem to invoke a
* routine in aux memory
XF2AUX      MAC
            SEI               ; Disable IRQ before XFER
            LDX   LCBANK1     ; R/W LC RAM, bank 1
            LDX   LCBANK1
            LDX   #<]1
            STX   STRTL
            LDX   #>]1
            STX   STRTH
            SEC               ; Use aux memory
            BIT   RTSINSTR    ; Set V: use alt ZP and LC
            JMP   XFER
            EOM

* Called by code running in aux mem to invoke a
* routine in main memory
XF2MAIN     MAC
            SEI               ; Disable IRQ before XFER
            LDX   #<]1
            STX   STRTL
            LDX   #>]1
            STX   STRTH
            TSX
            STX   $0101       ; Save alt SP
            LDX   $0100       ; Load main SP into X
            CLC               ; Use main mem
            CLV               ; Use main ZP and LC
            JMP   XFER
            EOM

* Macro called on re-entry to aux memory
* Careful: This enables IRQ - not for use in ISR
ENTAUX      MAC
            LDX   $0101       ; Recover alt SP
            TXS
            CLI               ; Re-enable IRQ after XFER
            EOM

* Macro called on re-entry to main memory
* Careful: This enables IRQ - not for use in ISR
ENTMAIN     MAC
            TXS               ; Main SP already in X
            LDX   ROMIN       ; Bank in ROM
            LDX   ROMIN
            CLI               ; Re-enable IRQ after XFER
            EOM

* Macro called on re-entry to aux memory
* For use in interrupt handlers (no CLI!)
IENTAUX     MAC
            LDX   $0101       ; Recover alt SP
            TXS
            EOM

* Macro called on re-entry to main memory
* For use in interrupt handlers (no CLI!)
IENTMAIN    MAC
            TXS               ; Main SP already in X
            LDX   ROMIN       ; Bank in ROM
            LDX   ROMIN
            EOM

* Enable writing to main memory (for code running in aux)
WRTMAIN     MAC
            PHP
            SEI               ; Keeps IRQ handler easy
            STZ   WRMAINRAM   ; Write to main memory
            EOM

* Go back to writing to aux (for code running in aux)
WRTAUX      MAC
            STZ   WRCARDRAM   ; Write to aux memory
            PLP               ; Normal service resumed
            EOM

* Enable reading from main memory (for code running in aux LC)
RDMAIN      MAC
            PHP
            SEI               ; Keeps IRQ handler easy
            STZ   RDMAINRAM   ; Read from main memory
            EOM

* Go back to reading from aux (for code running in aux LC)
RDAUX       MAC
            STZ   RDCARDRAM   ; Read from aux memory
            PLP               ; Normal service resumed
            EOM

* Manually enable AltZP + Aux LC (for code running in main)
* Banks ROM out
ALTZP       MAC
            PHP
            SEI               ; Disable IRQ when AltZP on
            LDA   LCBANK1     ; R/W LC bank 1
            LDA   LCBANK1
            STZ   SETALTZP    ; Alt ZP and LC
            EOM

* Manually disable AltZP + Aux LC (for code running in main)
* Banks ROM in
MAINZP      MAC
            STZ   SETSTDZP    ; Main ZP and LC
            LDA   ROMIN       ; Bank ROM back in
            LDA   ROMIN
            PLP               ; Turn IRQ back on
            EOM

* Code is all included from PUT files below ...
* ... order matters!
            PUT   MAINMEM.LDR
            PUT   AUXMEM.MOSEQU
            PUT   AUXMEM.INIT
            PUT   AUXMEM.VDU
            PUT   AUXMEM.HGR
            PUT   AUXMEM.SHR
            PUT   AUXMEM.HOSTFS
            PUT   AUXMEM.OSCLI
            PUT   AUXMEM.BYTWRD
            PUT   AUXMEM.CHARIO
            PUT   AUXMEM.AUDIO
            PUT   AUXMEM.MISC
            PUT   MAINMEM.MENU
            PUT   MAINMEM.FSEQU
            PUT   MAINMEM.INIT
            PUT   MAINMEM.SVC
            PUT   MAINMEM.HGR
            PUT   MAINMEM.PATH
            PUT   MAINMEM.WILD
            PUT   MAINMEM.LISTS
            PUT   MAINMEM.MISC
            PUT   MAINMEM.AUDIO
            PUT   MAINMEM.ENSQ
            PUT   MAINMEM.ENSQFREQ
            PUT   MAINMEM.MOCK
            PUT   MAINMEM.MOCKFREQ
            PUT   MAINMEM.FONT8

* Automatically save the object file:
            SAV   APLCORN.SYSTEM
More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`* APPLECORN.S`
			`* (c) Bobbi 2021 GPLv3`
			`*`
Added more OSBYTE/OSWORD calls. FSCV vector. 2021-07-25 23:04:51 +00:00			`* Load an Acorn BBC Micro ROM in aux memory and`
Initial version. 2021-07-16 02:16:22 +00:00			`* Provide an environment where it can run`
Merged in JGHarston's patch. (Second attempt!)` 2021-07-27 00:07:51 +00:00			`*`
More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`* Assembled with the Merlin 8 v2.58 assembler on Apple II.`
Initial version. 2021-07-16 02:16:22 +00:00
Merge part 1 of PR 121 'XF2MAIN, ENTAUX ...' 2021-10-14 23:10:11 +00:00			`* 14-Oct-2021 XF2MAIN, ENTAUX no longer save/restore STRTL/STRTH.`


Handle I/O buffers. Split code into multiple files. 2021-07-28 04:17:47 +00:00			`XC ; 65c02`
Complete "SYSTEM"-ification of Applecorn. Now runs as APLCORN.SYSTEM, without the need for BASIC.SYSTEM as a support for .BIN. 2022-10-07 03:09:29 +00:00			`ORG $2000 ; Load addr of loader in main memory`
Added support for Fdraw gfx library. 2021-09-18 01:06:24 +00:00			`; Clear of first HGR frame buffer`
Initial version. 2021-07-16 02:16:22 +00:00
			`* Monitor routines`
			`BELL EQU $FBDD`
			`PRBYTE EQU $FDDA`
			`COUT1 EQU $FDED`
			`CROUT EQU $FD8E`
Enable Ensoniq if machine is a GS. 2022-10-14 04:47:42 +00:00			`IDROUTINE EQU $FE1F`
OSFILE: Call GET_FILE_INFO to obtain load address 2021-08-18 00:13:51 +00:00			`HOME EQU $FC58`
Initial version. 2021-07-16 02:16:22 +00:00			`AUXMOVE EQU $C311`
			`XFER EQU $C314`

			`* Monitor ZP locations`
			`A1L EQU $3C`
			`A1H EQU $3D`
			`A2L EQU $3E`
			`A2H EQU $3F`
Fixed #199 - ISR now has exclusive use of A3L/A3H. 2022-12-22 02:04:44 +00:00			`A3L EQU $40 ; Used for ISR only`
			`A3H EQU $41 ; Used for ISR only`
Initial version. 2021-07-16 02:16:22 +00:00			`A4L EQU $42`
			`A4H EQU $43`

			`* Used by XFER`
			`STRTL EQU $3ED`
			`STRTH EQU $3EE`

Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`* Apple II BREAK vector`
			`BREAKV EQU $3F0`

Initial version. 2021-07-16 02:16:22 +00:00			`* Reset vector (2 bytes + 1 byte checksum)`
			`RSTV EQU $3F2`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`PWRDUP EQU $3F4`
Initial version. 2021-07-16 02:16:22 +00:00
Pass Apple II IRQs to ProDOS IRQ handler (not tested!) 2021-08-06 03:02:13 +00:00			`* IRQ vector`
			`A2IRQV EQU $3FE`

Switch to labels instead of absolute addresses for ProDOS globals 2022-10-08 09:17:19 +00:00			`* ProDOS Global Page equates`
Initial version. 2021-07-16 02:16:22 +00:00			`* MLI entry point`
			`MLI EQU $BF00`
Update ProDOS globals to use labels instead of absolutes 2022-10-09 01:38:12 +00:00			`* Device Addresses`
			`DEVADR01 EQU $BF10`
			`DEVADR32 EQU $BF26`
			`* Device List`
			`DEVNUM EQU $BF30`
			`DEVCNT EQU $BF31`
			`DEVLST EQU $BF32`
			`* Date & time`
			`PRODOSDATE EQU $BF90`
			`PRODOSTIME EQU $BF92`
Switch to labels instead of absolute addresses for ProDOS globals 2022-10-08 09:17:19 +00:00			`* Machine ID byte`
			`MACHID EQU $BF98`
			`* Versioning bytes`
			`IBAKVER EQU $BFFC`
			`IVERSION EQU $BFFD`
			`* System BitMap locations`
			`P8BMAP0007 EQU $BF58`
			`P8BMAP080F EQU $BF59`
			`P8BMAP2027 EQU $BF5C`
			`P8BMAP282F EQU $BF5D`
			`P8BMAP3037 EQU $BF5E`
			`P8BMAP383F EQU $BF5F`
Initial version. 2021-07-16 02:16:22 +00:00
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`*Hardware I/O locations`
			`KEYBOARD EQU $C000`
			`80STOREOFF EQU $C000`
			`80STOREON EQU $C001 ; Currently not used`
			`RDMAINRAM EQU $C002`
			`RDCARDRAM EQU $C003`
			`WRMAINRAM EQU $C004`
			`WRCARDRAM EQU $C005`
			`SETSTDZP EQU $C008`
			`SETALTZP EQU $C009`
			`CLR80VID EQU $C00C`
			`SET80VID EQU $C00D`
			`CLRALTCHAR EQU $C00E`
			`SETALTCHAR EQU $C00F`
Bug fix to Mockingboard ISR. Works now! 2022-11-21 03:45:40 +00:00			`RDRAMRD EQU $C013`
			`RDRAMWR EQU $C014`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`KBDSTRB EQU $C010`
			`RDVBL EQU $C019`
			`RD80VID EQU $C01F`

			`TBCOLOR EQU $C022 ; GS-specific, used but commented out`
Beginnings of SHR support (just mode selection for now) 2022-12-22 18:44:40 +00:00			`NEWVIDEO EQU $C029 ; GS-specific, new video register`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00
			`SPKR EQU $C030`
			`CLOCKCTL EQU $C034 ; GS-specific, Clock control register`
Turn off SHR shadowing! 2022-12-25 04:18:03 +00:00			`SHADOW EQU $C035 ; GS-specific, Shadow Register`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`CYAREG EQU $C036 ; GS-specific, CYA Register`

			`GRON EQU $C050`
			`TEXTON EQU $C051`
			`FULLGR EQU $C052`
			`MIXGRTXT EQU $C053 ; Currently not used`
			`PAGE1 EQU $C054`
			`PAGE2 EQU $C055`
			`LORES EQU $C056 ; Currently not used`
			`HIRES EQU $C057`
			`AN0OFF EQU $C058`
			`AN0ON EQU $C059`
			`AN1OFF EQU $C05A`
			`AN1ON EQU $C05B`
			`AN2OFF EQU $C05C`
			`AN2ON EQU $C05D`
			`AN3OFF EQU $C05E`
			`AN3ON EQU $C05F`

			`BUTTON0 EQU $C061`
			`BUTTON1 EQU $C062`

			`ROMIN EQU $C081`
			`LCBANK1 EQU $C08B`


Handle I/O buffers. Split code into multiple files. 2021-07-28 04:17:47 +00:00			`* IO Buffer for reading file (1024 bytes)`
Consolidated error handler patch from JGH. 2021-08-29 05:13:31 +00:00			`IOBUF0 EQU $0C00 ; For loading/saving, OSFILE, *.`
			`IOBUF1 EQU $1000 ; Four open files for langs`
			`IOBUF2 EQU $1400`
			`IOBUF3 EQU $1800`
			`IOBUF4 EQU $1C00`
Initial version. 2021-07-16 02:16:22 +00:00
BGET and BPUT seem to be working now. 2021-07-29 00:47:26 +00:00			`* 512 byte buffer sufficient for one disk block`
Added support for Fdraw gfx library. 2021-09-18 01:06:24 +00:00			`BLKBUF EQU $9000 ; Can't use $400 as ProDOS uses`
			`BLKBUFEND EQU $9200 ; 'hidden' bytes within screen`
Initial version. 2021-07-16 02:16:22 +00:00
COPY WILDCARD SOMEDIR is now working. 2021-09-16 02:03:57 +00:00			`* 512 byte buffer for file copy (*COPY)`
Added support for Fdraw gfx library. 2021-09-18 01:06:24 +00:00			`COPYBUF EQU $9200 ; File copy needs separate buffer`
			`*COPYBUFEND EQU $9400`
COPY WILDCARD SOMEDIR is now working. 2021-09-16 02:03:57 +00:00
Load FDRAW.FAST from file at runtime. 2021-09-22 02:05:42 +00:00			`* Location of FDraw library in main memory`
			`FDRAWADDR EQU $9400`

Reinstated font loading code that got dropped. 2021-09-23 16:59:36 +00:00			`* Location of FDraw library in main memory`
			`FONTADDR EQU $A900`

Initial version. 2021-07-16 02:16:22 +00:00			`* Address in aux memory where ROM will be loaded`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`ROMAUXADDR EQU $8000`
Initial version. 2021-07-16 02:16:22 +00:00
			`* Address in aux memory where the MOS shim is located`
Handle I/O buffers. Split code into multiple files. 2021-07-28 04:17:47 +00:00			`AUXMOS1 EQU $2000 ; Temp staging area in Aux`
Updated EQUs to make more room for growing code! 2021-08-28 04:44:45 +00:00			`EAUXMOS1 EQU $5000 ; End of staging area`
Handle I/O buffers. Split code into multiple files. 2021-07-28 04:17:47 +00:00			`AUXMOS EQU $D000 ; Final location in aux LC`
Initial version. 2021-07-16 02:16:22 +00:00
Further code cleanup. 2021-08-01 00:37:18 +00:00			`* Called by code running in main mem to invoke a`
			`* routine in aux memory`
			`XF2AUX MAC`
Move SEI to top of XF2AUX macro. Safer! 2021-12-08 16:28:56 +00:00			`SEI ; Disable IRQ before XFER`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`LDX LCBANK1 ; R/W LC RAM, bank 1`
			`LDX LCBANK1`
Clean up macros. IRQ handling fix 2021-08-14 05:18:35 +00:00			`LDX #<]1`
			`STX STRTL`
			`LDX #>]1`
			`STX STRTH`
Further code cleanup. 2021-08-01 00:37:18 +00:00			`SEC ; Use aux memory`
Fixed crash with John Brooks's /RAM3 RawWorks driver 2021-11-06 02:09:20 +00:00			`BIT RTSINSTR ; Set V: use alt ZP and LC`
Further code cleanup. 2021-08-01 00:37:18 +00:00			`JMP XFER`
Code cleanup. 2021-07-30 20:49:34 +00:00			`EOM`

Finished refactoring/cleanup 2021-08-01 01:39:05 +00:00			`* Called by code running in aux mem to invoke a`
			`* routine in main memory`
			`XF2MAIN MAC`
Fix to XF2MAIN macro. Protect 3ED/3EE ! 2022-11-28 01:05:53 +00:00			`SEI ; Disable IRQ before XFER`
Clean up macros. IRQ handling fix 2021-08-14 05:18:35 +00:00			`LDX #<]1`
			`STX STRTL`
			`LDX #>]1`
			`STX STRTH`
Even more code cleanup! 2021-08-01 00:19:15 +00:00			`TSX`
			`STX $0101 ; Save alt SP`
Minor change to SP handling on AUX->MAIN 2021-08-15 19:27:35 +00:00			`LDX $0100 ; Load main SP into X`
Finished refactoring/cleanup 2021-08-01 01:39:05 +00:00			`CLC ; Use main mem`
			`CLV ; Use main ZP and LC`
			`JMP XFER`
More code cleanup (in progress ...) 2021-07-30 21:33:50 +00:00			`EOM`

More code cleanup 2021-07-31 22:58:59 +00:00			`* Macro called on re-entry to aux memory`
Increase EAUXMOS1 (end of staging area) - Thanks JGH! 2021-08-19 17:50:59 +00:00			`* Careful: This enables IRQ - not for use in ISR`
More code cleanup 2021-07-31 22:58:59 +00:00			`ENTAUX MAC`
More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`LDX $0101 ; Recover alt SP`
			`TXS`
			`CLI ; Re-enable IRQ after XFER`
More code cleanup (in progress ...) 2021-07-30 21:33:50 +00:00			`EOM`

More code cleanup 2021-07-31 22:58:59 +00:00			`* Macro called on re-entry to main memory`
Increase EAUXMOS1 (end of staging area) - Thanks JGH! 2021-08-19 17:50:59 +00:00			`* Careful: This enables IRQ - not for use in ISR`
Further cleanup 2021-07-31 21:33:08 +00:00			`ENTMAIN MAC`
Minor change to SP handling on AUX->MAIN 2021-08-15 19:27:35 +00:00			`TXS ; Main SP already in X`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`LDX ROMIN ; Bank in ROM`
			`LDX ROMIN`
More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`CLI ; Re-enable IRQ after XFER`
Further cleanup 2021-07-31 21:33:08 +00:00			`EOM`

IENTAUX/IENTMAIN macros for IRQ handlers. No CLI! 2021-08-17 16:00:50 +00:00			`* Macro called on re-entry to aux memory`
			`* For use in interrupt handlers (no CLI!)`
			`IENTAUX MAC`
			`LDX $0101 ; Recover alt SP`
			`TXS`
			`EOM`

			`* Macro called on re-entry to main memory`
			`* For use in interrupt handlers (no CLI!)`
			`IENTMAIN MAC`
			`TXS ; Main SP already in X`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`LDX ROMIN ; Bank in ROM`
			`LDX ROMIN`
IENTAUX/IENTMAIN macros for IRQ handlers. No CLI! 2021-08-17 16:00:50 +00:00			`EOM`

Pass Apple II IRQs to ProDOS IRQ handler (not tested!) 2021-08-06 03:02:13 +00:00			`* Enable writing to main memory (for code running in aux)`
			`WRTMAIN MAC`
Back to new WRTMAIN/WRTAUX. Fixed //e bug that prevented this. 2022-09-24 18:50:30 +00:00			`PHP`
Pass Apple II IRQs to ProDOS IRQ handler (not tested!) 2021-08-06 03:02:13 +00:00			`SEI ; Keeps IRQ handler easy`
Use STZ in macros to set softswitches. 2022-12-18 23:42:54 +00:00			`STZ WRMAINRAM ; Write to main memory`
Pass Apple II IRQs to ProDOS IRQ handler (not tested!) 2021-08-06 03:02:13 +00:00			`EOM`

More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`* Go back to writing to aux (for code running in aux)`
Pass Apple II IRQs to ProDOS IRQ handler (not tested!) 2021-08-06 03:02:13 +00:00			`WRTAUX MAC`
Use STZ in macros to set softswitches. 2022-12-18 23:42:54 +00:00			`STZ WRCARDRAM ; Write to aux memory`
Back to new WRTMAIN/WRTAUX. Fixed //e bug that prevented this. 2022-09-24 18:50:30 +00:00			`PLP ; Normal service resumed`
Pass Apple II IRQs to ProDOS IRQ handler (not tested!) 2021-08-06 03:02:13 +00:00			`EOM`

Audited RDMAINRAM/RDCARDRAM is safe. 2022-12-19 00:04:38 +00:00			`* Enable reading from main memory (for code running in aux LC)`
			`RDMAIN MAC`
			`PHP`
			`SEI ; Keeps IRQ handler easy`
			`STZ RDMAINRAM ; Read from main memory`
			`EOM`

			`* Go back to reading from aux (for code running in aux LC)`
			`RDAUX MAC`
			`STZ RDCARDRAM ; Read from aux memory`
			`PLP ; Normal service resumed`
			`EOM`

Fixed mistake in comment. 2022-12-12 01:55:23 +00:00			`* Manually enable AltZP + Aux LC (for code running in main)`
Improved comments for ALTZP / MAINZP macros. 2022-12-12 01:53:34 +00:00			`* Banks ROM out`
More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`ALTZP MAC`
Interrupt fixes to macros (applecorn.s) 2022-09-19 23:25:51 +00:00			`PHP`
More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`SEI ; Disable IRQ when AltZP on`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`LDA LCBANK1 ; R/W LC bank 1`
			`LDA LCBANK1`
Use STZ in macros to set softswitches. 2022-12-18 23:42:54 +00:00			`STZ SETALTZP ; Alt ZP and LC`
More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`EOM`

Fixed mistake in comment. 2022-12-12 01:55:23 +00:00			`* Manually disable AltZP + Aux LC (for code running in main)`
Improved comments for ALTZP / MAINZP macros. 2022-12-12 01:53:34 +00:00			`* Banks ROM in`
More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`MAINZP MAC`
Use STZ in macros to set softswitches. 2022-12-18 23:42:54 +00:00			`STZ SETSTDZP ; Main ZP and LC`
Label-ize absolute references to Apple II I/O locations. Fix a typo-ed reference to CLRALTCHAR to correct location. 2022-10-12 04:00:36 +00:00			`LDA ROMIN ; Bank ROM back in`
			`LDA ROMIN`
Interrupt fixes to macros (applecorn.s) 2022-09-19 23:25:51 +00:00			`PLP ; Turn IRQ back on`
More IRQ handling fixes. Should be correct now! 2021-08-16 18:58:05 +00:00			`EOM`

Code cleanup. 2021-07-30 20:49:34 +00:00			`* Code is all included from PUT files below ...`
Split source files, for ease of maintenance. 2021-08-08 02:48:24 +00:00			`* ... order matters!`
Renamed LOADER->MAINMEM.LDR 2021-09-07 01:39:36 +00:00			`PUT MAINMEM.LDR`
Incorporate the rest of JGH's MOS refactoring. 2021-08-10 01:27:44 +00:00			`PUT AUXMEM.MOSEQU`
			`PUT AUXMEM.INIT`
			`PUT AUXMEM.VDU`
Cleaning up HGR code in preparation for SHR. 2022-12-21 05:21:16 +00:00			`PUT AUXMEM.HGR`
Fix order of PUT files. 2022-12-22 17:19:20 +00:00			`PUT AUXMEM.SHR`
Incorporate the rest of JGH's MOS refactoring. 2021-08-10 01:27:44 +00:00			`PUT AUXMEM.HOSTFS`
Refactored code. Renamed source file. 2021-08-15 03:42:06 +00:00			`PUT AUXMEM.OSCLI`
Incorporate the rest of JGH's MOS refactoring. 2021-08-10 01:27:44 +00:00			`PUT AUXMEM.BYTWRD`
			`PUT AUXMEM.CHARIO`
Merge code from ensoniq branch. Disabled by default. 2022-10-14 04:22:27 +00:00			`PUT AUXMEM.AUDIO`
Incorporate the rest of JGH's MOS refactoring. 2021-08-10 01:27:44 +00:00			`PUT AUXMEM.MISC`
Re-order files so MOSSHIM block occupies HGR1 during load/initialize process. This eliminates the gap/slack space between the .SYSTEM stub loader and the MAIN memory resident code. 2022-10-10 09:23:15 +00:00			`PUT MAINMEM.MENU`
			`PUT MAINMEM.FSEQU`
			`PUT MAINMEM.INIT`
			`PUT MAINMEM.SVC`
Cleaning up HGR code in preparation for SHR. 2022-12-21 05:21:16 +00:00			`PUT MAINMEM.HGR`
Re-order files so MOSSHIM block occupies HGR1 during load/initialize process. This eliminates the gap/slack space between the .SYSTEM stub loader and the MAIN memory resident code. 2022-10-10 09:23:15 +00:00			`PUT MAINMEM.PATH`
			`PUT MAINMEM.WILD`
			`PUT MAINMEM.LISTS`
			`PUT MAINMEM.MISC`
Merge code from ensoniq branch. Disabled by default. 2022-10-14 04:22:27 +00:00			`PUT MAINMEM.AUDIO`
Moved Ensoniq code to mainmem.ensq.s 2022-11-18 00:31:29 +00:00			`PUT MAINMEM.ENSQ`
Added template for Mockingboard code. 2022-11-18 00:38:21 +00:00			`PUT MAINMEM.ENSQFREQ`
			`PUT MAINMEM.MOCK`
Added Mockingboard frequencies table 2022-11-19 03:43:24 +00:00			`PUT MAINMEM.MOCKFREQ`
Added 8x8 font for SHR modes. 2022-12-21 04:21:37 +00:00			`PUT MAINMEM.FONT8`
Incorporate the rest of JGH's MOS refactoring. 2021-08-10 01:27:44 +00:00
Merged JGH's memory reorganization changes. 2021-08-30 23:08:22 +00:00			`* Automatically save the object file:`
Complete "SYSTEM"-ification of Applecorn. Now runs as APLCORN.SYSTEM, without the need for BASIC.SYSTEM as a support for .BIN. 2022-10-07 03:09:29 +00:00			`SAV APLCORN.SYSTEM`
Merging JGH: Tweeks to i/f between OSCLI & HOSTFS. 2021-08-26 21:36:46 +00:00
Cleaned up CRTFILE. 2021-09-07 03:43:42 +00:00