;-----------------------------------------------------------------------------
; Zero page stuff
-MIN_X = $20
-MAX_X = $21
-MIN_Y = $22
-MAX_Y = $23
-CH = $24
-CV = $25
-BASL = $28
-TEXTTYP = $32
-RNDL = $4E ; Random value, low byte
-RNDH = $4F ; Random value, high byte
-MEMSIZE = $73 ; Highest free RAM location
+WNDLFT := $20 ; Text window left
+WNDWDTH := $21 ; Text window width
+WNDTOP := $22 ; Text window top
+WNDBTM := $23 ; Text window bottom+1
+CH := $24 ; Cursor horizontal position
+CV := $25 ; Cursor vertical position
+BASL := $28 ; Text base address low
+BASH := $29 ; Text base address high
+INVFLG := $32 ; Normal/inverse(/flash)
+PROMPT := $33 ; Used by GETLN
+RNDL := $4E ; Random counter low
+RNDH := $4F ; Random counter high
+HIMEM := $73 ; Highest available memory address+1
;-----------------------------------------------------------------------------
; Vectors
-BRKVec = $03F0 ; Break vector
-RESTOR = $03D0 ; Goto Dos
-
-; ---------------------------------------------------------------------------
-; Screen size
-
-XSIZE = 40
-YSIZE = 24
+DOSWARM := $03D0 ; DOS warmstart vector
+BRKVec := $03F0 ; Break vector
+SOFTEV := $03F2 ; Vector for warm start
+PWREDUP := $03F4 ; This must be = EOR #$A5 of SOFTEV+1
;-----------------------------------------------------------------------------
; Hardware
-; Soft switches
-;
-; Write to USEROM to enable apple rom C000-CFFF
-USEROM = $C007
-
-; 80 column card switches
-C80ON = $C00C
-C80OFF = $C00D
-RD80COL = $C01F
-PG2OFF = $C054
-PG2ON = $C055
-RDPAGE2 = $C01C
-
-; Keyboard entries
-RDKEY = $FD0C
-CLEAR_KEY_STROBE = $C010
-KEY_STROBE = $C000
+; Keyboard input
+KBD := $C000 ; Read keyboard
+KBDSTRB := $C010 ; Clear keyboard strobe
+
+; 80 column video switches
+CLR80COL:= $C000 ; Disable 80 column store
+SET80COL:= $C001 ; Enable 80 column store
+RD80VID := $C01F ; >127 if 80 column video enabled
+
+; Character set switches
+CLRALTCHAR := $C00E ; Normal Apple II char set
+SETALTCHAR := $C00F ; Norm/inv LC, no flash
+ALTCHARSET := $C01E ; >127 if alt charset switched in
+
+; Language card switches
+RDLCBNK2 := $C011 ; >127 if LC bank 2 in use
+RDLCRAM := $C012 ; >127 if LC is read enabled
+ROMIN := $C081 ; Swap in D000-FFFF ROM
+LCBANK2 := $C083 ; Swap in LC bank 2
+LCBANK1 := $C08B ; Swap in LC bank 1
+
+; Video mode switches
+MIXCLR := $C052 ; Disable 4 lines of text
+MIXSET := $C053 ; Enable 4 lines of text
+LOWSCR := $C054 ; Page 1
+HISCR := $C055 ; Page 2
+LORES := $C056 ; Lores graphics
+HIRES := $C057 ; Hires graphics
; Game controller
-OPEN_APPLE = $C061
-CLOSED_APPLE = $C062
-
-;-----------------------------------------------------------------------------
-; ROM routines
-
-; Text output and helpers
-HOME = $FC58
-VTABZ = $FC24
-COUT = $FDED
-
-; Graphics entry points, by cbmnut (applenut??) cbmnut@hushmail.com
-WHITE = $01 ; White for $1c, I think...
-
-COLOR = $1C ; Current plot color
-
-HGR2 = $F3D8 ; Initialize and clear hi-res page 2.
-
-HGR = $F3E2 ; Initialize and clear hi-res page 1.
-
-HCLR = $F3F2 ; Clear the current hi-res screen to black.
-
-BKGND = $F3F6 ; Clear the current hi-res screen to the
- ; last plotted color (from ($1C).
-
-HPOSN = $F411 ; Positions the hi-res cursor without
- ; plotting a point.
- ; Enter with (A) = Y-coordinate, and
- ; (Y,X) = X-coordinate.
-
-HPLOT = $F457 ; Calls HPOSN and tries to plot a dot at
- ; the cursor's position. If you are
- ; trying to plot a non-white color at
- ; a complementary color position, no
- ; dot will be plotted.
-
-HLIN = $F53A ; Draws a line from the last plotted
- ; point or line destination to:
- ; (X,A) = X-coordinate, and
- ; (Y) = Y-coordinate.
-
-HFIND = $F5CB ; Converts the hi-res coursor's position
- ; back to X- and Y-coordinates; stores
- ; X-coordinate at $E0,E1 and Y-coordinate
- ; at $E2.
-
-DRAW = $F601 ; Draws a shape. Enter with (Y,X) = the
- ; address of the shape table, and (A) =
- ; the rotation factor. Uses the current
- ; color.
-
-XDRAW = $F65D ; Draws a shape by inverting the existing
- ; color of the dots the shape draws over.
- ; Same entry parameters as DRAW.
-
-SETHCOL = $F6EC ; Set the hi-res color to (X), where (X)
- ; must be between 0 and 7.
+BUTN0 := $C061 ; Open-Apple Key
+BUTN1 := $C062 ; Closed-Apple Key
projects / cc65 / blobdiff