Apple-2-SW/dos33fsprogs
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fire: working on actual hardware

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This commit is contained in:
Vince Weaver 2019-01-04 17:13:56 -05:00
parent c1dd559235
commit 1d0daf7dcd
4 changed files with 33 additions and 18 deletions
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2
fire/fe_monitor
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@ -1,2 +1,2 @@
70: 2C 50 C0 20 70 FC A9 FF 91 2A 88 10 FB A9 16 85 25 20 22 FC A0 27 A5 4E F0 05 0A F0 04 90 02 49 1D 85 4E 30 09 B1 28 29 07 AA B5 A7 91 28 88 10 E5 C6 25 10 DC 30 CC 00 BB 00 AA 00 99 00 DD
70: 2C 50 C0 2C 52 C0 20 70 FC A9 FF 91 2A 88 10 FB A9 16 85 25 20 22 FC A0 27 68 F0 05 0A F0 04 90 02 49 1D 48 30 09 B1 28 29 07 AA B5 A8 91 28 88 10 E7 C6 25 10 DE 30 CE 00 BB 00 AA 00 99 00 DD
70G

BIN
fire/fire.dsk
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Binary file not shown.

44
fire/fire_extreme.s
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@ -11,6 +11,15 @@
; 64 bytes -- use the firmware SCROLL routine to handle the scrolling
; this adds some flicker but saves many bytes
; 63 bytes -- qkumba noted that SCROLL leaves BAS2L:BAS2H pointing at $7d0
; 66 bytes -- tried on real hardware. Found that the original firmware
; never sets MIXCLR on boot, and my II+ machine was leaving
; it off so for correctness need to add it on.
; 66 bytes -- wasted a lot of time trying to either find clever ways to
; get $C050/C052 accessed, or to shorten the lookup table
; in half by lsr. Nothing panned out.
; 64 bytes -- realized I could save/restore the random SEEDL on the stack!
; doesn't seem to affect the output pattern either.
; Zero Page
@ -25,7 +34,7 @@ SEEDL = $4E
; Soft Switches
SET_GR = $C050 ; Enable graphics
FULLGR = $C052 ; Full screen, no text
MIXCLR = $C052 ; Full screen, no text at bottom
LORES = $C056 ; Enable LORES graphics
; Monitor ROM routines. Try to use well-known entry points as
@ -39,10 +48,14 @@ fire_demo:
; Set lores graphics
bit SET_GR ; force graphics mode ; 3
; happily at bootup FULLGR and LORES
; seem to already be in the right positions
; so we get LORES 40x48 mode
; LORES and LOWSCR (lo-res page1)
; are set by the boot rom
bit MIXCLR ; want full-screen graphics w/o mixed ; 3
; text the boot process doesn't set this
; (it doesn't matter in text mode)
; and while IIe and emulators come up clear
; my Apple II+ doesn't
; Set window. This seems to be set properly at boot though
; lda #0
@ -95,13 +108,15 @@ xloop:
; http://codebase64.org/doku.php?id=base:small_fast_8-bit_prng
random8:
lda SEEDL ; 2
pla
; lda SEEDL ; 2
beq doEor ; 2
asl ; 1
beq noEor ; if the input was $80, skip the EOR ; 2
bcc noEor ; 2
doEor: eor #$1d ; 2
noEor: sta SEEDL ; 2
noEor: ;sta SEEDL ; 2
pha
; end inlined RNG
@ -125,14 +140,13 @@ no_change:
bmi scroll_loop ; 2
color_progression:
.byte $00 ; 8->0 ; 1000 0000
.byte $bb ; 9->11 ; 1001 1011
.byte $00 ; 10->0 ; 1010 0000
.byte $aa ; 11->10 ; 1011 1010
.byte $00 ; 12->0 ; 1100 0000
.byte $99 ; 13->9 ; 1101 1001
.byte $00 ; 14->0 ; 1110 0000
.byte $dd ; 15->13 ; 1111 1101
.byte $00 ; 8->0 ; 1000 -> 0000 ; needed
.byte $bb ; 9->11 ; 1001 -> 1011
.byte $00 ; 10->0 ; 1010 -> 0000 ; needed
.byte $aa ; 11->10 ; 1011 -> 1010
.byte $00 ; 12->0 ; 1100 -> 0000 ; don't care
.byte $99 ; 13->9 ; 1101 -> 1001
.byte $00 ; 14->0 ; 1110 -> 0000 ; don't care
.byte $dd ; 15->13 ; 1111 -> 1101

5
fire/hello.bas
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@ -1,8 +1,9 @@
5 HOME
10 PRINT "FIRE DEMO V1.3 BY DEATER"
7 X=PEEK(49235): REM FORCE II+ BEHAVIOR FOR TESTING
10 PRINT "FIRE DEMO V1.4 BY DEATER"
20 PRINT:PRINT
30 PRINT "WHICH DEMO DO YOU WISH TO RUN?"
40 PRINT "1. FIRE_EXTREME (63 BYTES)"
40 PRINT "1. FIRE_EXTREME (64 BYTES)"
50 PRINT "2. FIRE_FIRMWARE (80 BYTES)"
60 PRINT "3. FIRE_TINY (105 BYTES)"
70 PRINT "4. RANDOM COOL EFFECT"