mirror of
https://github.com/cc65/cc65.git
synced 2024-08-16 12:29:03 +00:00
that are set on startup. This is needed to support the C128, which can switch the screen size at runtime. git-svn-id: svn://svn.cc65.org/cc65/trunk@2042 b7a2c559-68d2-44c3-8de9-860c34a00d81
75 lines
1.9 KiB
PHP
75 lines
1.9 KiB
PHP
;
|
|
; Vic20 generic definitions. Stolen mostly from c64.inc - Steve Schmidtke
|
|
;
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Zero page, Commodore stuff
|
|
|
|
ST = $90 ; IEC status byte
|
|
|
|
TIME = $A0 ; 60HZ clock
|
|
FNAM_LEN = $B7 ; Length of filename
|
|
SECADR = $B9 ; Secondary address
|
|
DEVNUM = $BA ; Device number
|
|
KEY_COUNT = $C6 ; Number of keys in input buffer
|
|
RVS = $C7 ; Reverse flag
|
|
CURS_FLAG = $CC ; 1 = cursor off
|
|
CURS_BLINK = $CD ; Blink counter
|
|
CURS_CHAR = $CE ; Character under the cursor
|
|
CURS_STATE = $CF ; Cursor blink state
|
|
SCREEN_PTR = $D1 ; Pointer to current char in text screen
|
|
CURS_X = $D3 ; Cursor column
|
|
CURS_Y = $D6 ; Cursor row
|
|
CRAM_PTR = $F3 ; Pointer to current char in color RAM
|
|
|
|
CHARCOLOR = $286
|
|
CURS_COLOR = $287 ; Color under the cursor
|
|
PALFLAG = $2A6 ; $01 = PAL, $00 = NTSC
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Screen size
|
|
|
|
XSIZE = 22
|
|
YSIZE = 23
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Kernal routines
|
|
|
|
; Direct entries
|
|
CLRSCR = $E55F
|
|
KBDREAD = $E5CF
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; Vector and other locations
|
|
|
|
IRQVec = $0314
|
|
BRKVec = $0316
|
|
NMIVec = $0318
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; I/O: 6560 VIC
|
|
|
|
VIC = $9000
|
|
VIC_LINES = $9003 ; Screen lines, bit 7 is bit 0 from VIC_HLINE
|
|
VIC_HLINE = $9004 ; Rasterline, bits 1-8
|
|
VIC_COLOR = $900F ; Border and background color
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; I/O: 6522 VIA1
|
|
|
|
VIA1 = $9110
|
|
VIA1_JOY = $9111
|
|
VIA1_DDRB = $9112
|
|
VIA1_DDRA = $9113
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; I/O: 6522 VIA2
|
|
|
|
VIA2 = $9120
|
|
VIA2_JOY = $9120
|
|
VIA2_DDRB = $9122
|
|
VIA2_DDRA = $9123
|
|
|