-; Break vector
-BRKVec = $03F0
-; Goto Dos
-RESTOR = $03D0
+;-----------------------------------------------------------------------------
+; Zero page stuff
-; Top of available memory
-; This is actually for DOS 3.3 need to change it for ProDos
-TOPMEM = $9600
+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
+
+;-----------------------------------------------------------------------------
+; Vectors
+
+BRKVec = $03F0 ; Break vector
+RESTOR = $03D0 ; Goto Dos
+
+; ---------------------------------------------------------------------------
+; Screen size
+
+XSIZE = 40
+YSIZE = 24
+
+;-----------------------------------------------------------------------------
+; Hardware
; Soft switches
;
-; write to USEROM to enable apple rom C000-CFFF
-USEROM = $C007
+; Write to USEROM to enable apple rom C000-CFFF
+USEROM = $C007
+
; 80 column card switches
C80ON = $C00C
C80OFF = $C00D
PG2ON = $C055
RDPAGE2 = $C01C
-; Text routines
-MIN_X = $20
-MAX_X = $21
-MIN_Y = $22
-MAX_Y = $23
-CH = $24
-CV = $25
-BASL = $28
-TEXTTYP = $32
-MEMSIZE = $73 ; Highest free RAM location
-HOME = $FC58
-VTABZ = $FC24
-COUT = $FDED
-
; Keyboard entries
RDKEY = $FD0C
CLEAR_KEY_STROBE = $C010
KEY_STROBE = $C000
; Game controller
-OPEN_APPLE = $C061
-CLOSED_APPLE = $C062
+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.
projects / cc65 / blobdiff