extra effects

defs.asm

@@ -14,13 +14,25 @@ COLRAM  = $d800          ; color RAM
 CIA1_PA = $dc00          ; CIA1 port A: keyboard matrix column select
 CIA1_PB = $dc01          ; CIA1 port B: keyboard matrix row read
 
+; ---- sprite registers ----
+SPRPOS   = $d000         ; sprite 0 x; +1 = y, +2 = sprite 1 x, ...
+SPR_MSBX = $d010         ; 9th bit of each sprite's x coordinate
+SPR_EN   = $d015         ; sprite enable bits
+SPR_YEX  = $d017         ; vertical expand
+SPR_PRIO = $d01b         ; 1 = sprite behind the characters
+SPR_MC   = $d01c         ; multicolor enable
+SPR_XEX  = $d01d         ; horizontal expand
+SPR_COL  = $d027         ; sprite 0 color, +1 = sprite 1, ...
+
 ; ---- colors ----
 BLACK   = 0
 WHITE   = 1
 CYAN    = 3
 YELLOW  = 7
+ORANGE  = 8
 DGREY   = 11
 LGREEN  = 13
+LBLUE   = 14
 LGREY   = 15
 
 ; ---- screen layout (slide 1) ----
@@ -41,9 +53,15 @@ BAR_STEPS   = 57                 ; 57 steps * 4 lines = up to line 244
 
 NUM_SLIDES  = 5
 SLIDE_TIME  = 300                ; 6 seconds per slide (PAL, 50 frames/s)
+S5_TIME     = 450                ; slide 5 is longer: the typewriter needs time
 FADE_STEPS  = 5                  ; fade steps (longest fadetbl chain is 4)
 FADE_SPEED  = 4                  ; frames between two fade steps
 
+; ---- transition types (tin_tbl / tout_tbl in main.asm) ----
+TR_FADE     = 0                  ; fade through black (the original)
+TR_DISSOLVE = 1                  ; cells appear/vanish in random order
+TR_WIPE     = 2                  ; column sweep, left to right
+
 FADEBUF     = $c000              ; snapshot of color RAM for the fade-in
 
 ; ---- zero page pointers ----