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https://github.com/cc65/cc65.git
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90 lines
2.8 KiB
PHP
90 lines
2.8 KiB
PHP
;
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; Plus/4 generic definitions.
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;
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; ---------------------------------------------------------------------------
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; Zero page, Commodore stuff
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TMPPTR := $22 ; Temporary ptr used by BASIC
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VARTAB := $2D ; Pointer to start of BASIC variables
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MEMSIZE := $37 ; Pointer to highest BASIC RAM location (+1)
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TXTPTR := $3B ; Pointer into BASIC source code
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TIME := $A3 ; 60HZ clock
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FNAM_LEN := $AB ; Length of filename
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LFN := $AC ; Logical file number
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SECADR := $AD ; Secondary address
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DEVNUM := $AE ; Device number
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FNAM := $AF ; Pointer to filename for OPEN
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KEY_COUNT := $EF ; Number of keys in input buffer
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RVS := $C2 ; Reverse flag
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CURS_X := $CA ; Cursor column
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CURS_Y := $CD ; Cursor row
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SCREEN_PTR := $C8 ; Pointer to current char in text screen
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CRAM_PTR := $EA ; Pointer to current char in color RAM
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BASIC_BUF := $200 ; Location of command-line
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BASIC_BUF_LEN = 89 ; Maximum length of command-line
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FNBUF := $25E ; Buffer for filename
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FETCH := $494 ; lda (zp),y from RAM
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CHARCOLOR := $53B
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FKEY_COUNT := $55D ; Characters for function key
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FKEY_SPACE := $55F ; Function key definitions
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FKEY_ORIG := $F3D2 ; Original definitions
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; ---------------------------------------------------------------------------
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; Kernal routines
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; Direct entries
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CLRSCR := $D88B
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KBDREAD := $D8C1
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; ---------------------------------------------------------------------------
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; Vector and other locations
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IRQVec := $0314
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BRKVec := $0316
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NMIVec := $0318
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; ---------------------------------------------------------------------------
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; Screen size
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XSIZE = 40
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YSIZE = 25
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; ---------------------------------------------------------------------------
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; I/O
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TED_T1LO := $FF00
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TED_T1HI := $FF01
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TED_T2LO := $FF02
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TED_T2HI := $FF03
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TED_T3LO := $FF04
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TED_T4HI := $FF05
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TED_MULTI1 := $FF07
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TED_KBD := $FF08
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TED_CURSHI := $FF0C
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TED_CURSLO := $FF0D
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TED_V1FRQLO := $FF0E
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TED_V2FRQLO := $FF0F
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TED_V2FRQHI := $FF10
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TED_BGCOLOR := $FF15
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TED_COLOR1 := $FF16
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TED_COLOR2 := $FF17
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TED_COLOR3 := $FF18
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TED_BORDERCOLOR := $FF19
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TED_VLINEHI := $FF1C
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TED_VLINELO := $FF1D
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TED_HPOS := $FF1E
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TED_ROMSEL := $FF3E
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TED_RAMSEL := $FF3F
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; ---------------------------------------------------------------------------
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; RAM/ROM selection addresses
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ENABLE_ROM := TED_ROMSEL
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ENABLE_RAM := TED_RAMSEL
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