292
09.11.2024, 12:11 Uhr
Dresdenboy
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Es ist Wochenende und Zeit für mal wieder etwas Code, und zwar ein vereinfachtes, etwas optimiertes Plasma (noch nicht optisch poliert), mehr zur Demonstration der "Toolchain", um ASM-Code u. ggf. generierte Tabellen in DATA-Zeilen zu wandeln.
Benötigt werden für das Beispiel ein ASM-Listing (für den Arnold Assembler wg. Ausgabeformat), namens plasma_bic.asm:
| Quellcode: | ; b: charloop
; hl: ptr to sine/charmap
; charmap at h+1 -> inc/dec h?
; or charmap at de, d as Y pointer with 25 different char/color tables located at xx00h to (xx+24)00h
; and with loop end comparison (e.g. for SF=1)
cpu z80
org 0d6d8h
ld hl,sine ; address of data
ld a,49h ; CURS
out (99h),a ;
ld a,0 ; EAD
out (98h),a
out (98h),a
ld a,20h ; WDAT words
out (99h),a ;
ld c, 25
.lineloop:
ld b, 40
.charloop:
ld a,b ; 4 X
.ofs1:
add a,0 ; 7 X+Y+ofs1 (self modified)
add a,c ; 4 X+Y
ld l,a ; 4
ld d,(hl) ; 7 d = sin(X+44) in a 256 elements table
ld a,c ; 4 Y
.ofs2:
add a,0 ; 7 Y+ofs2 (self modified)
ld l,a ; 4
ld a,(hl) ; 7 a = sin(Y*3/2+34) in a 256 elements table
sub a,d ; 4 (sin(Y*3/2+34) + sin(X+44))
and 62 ; 7 map to 16 color words
inc h ; 4
ld l,a ; 4
ld a,(hl) ; 7 6*(4+7) -> 66 C
out (98h),a ; 11
inc hl ; 6
ld a,(hl) ; 7
out (98h),a ; 11
dec h ; 4
djnz .charloop ; 13/8 -> 66+47 = 113 -> 33.2 fps, with just color attribute 90 -> 41.6 fps (outer loop not calculated), unrolled: 77 -> 48.7 fps
dec c ; 4
jr nz,.lineloop ;
ld a,(frame)
inc a
ld (frame),a
ld l, a ; use as pointer into sine table
ld a, (hl)
ld (.ofs1+1),a
ret
org 0d800h
sine: ; actually 4 full sine waves, but get replaced by half frequency ones in the Python tool
db 03Fh,045h,04Bh,051h,057h,05Dh,062h,067h,06Ch,070h,073h,077h,079h,07Bh,07Dh,07Eh,07Eh,07Eh,07Dh,07Bh,079h,077h,073h
db 070h,06Ch,067h,062h,05Dh,057h,051h,04Bh,045h,03Fh,039h,033h,02Dh,027h,021h,01Ch,017h,012h,0Eh,0Bh,07h,05h,03h,01h,0
db 0,0,1,3,5,7,0Bh,0Eh,012h,017h,01Ch,021h,027h,02Dh,033h,039h
db 03Fh,045h,04Bh,051h,057h,05Dh,062h,067h,06Ch,070h,073h,077h,079h,07Bh,07Dh,07Eh,07Eh,07Eh,07Dh,07Bh,079h,077h,073h
db 070h,06Ch,067h,062h,05Dh,057h,051h,04Bh,045h,03Fh,039h,033h,02Dh,027h,021h,01Ch,017h,012h,0Eh,0Bh,07h,05h,03h,01h,0
db 0,0,1,3,5,7,0Bh,0Eh,012h,017h,01Ch,021h,027h,02Dh,033h,039h
db 03Fh,045h,04Bh,051h,057h,05Dh,062h,067h,06Ch,070h,073h,077h,079h,07Bh,07Dh,07Eh,07Eh,07Eh,07Dh,07Bh,079h,077h,073h
db 070h,06Ch,067h,062h,05Dh,057h,051h,04Bh,045h,03Fh,039h,033h,02Dh,027h,021h,01Ch,017h,012h,0Eh,0Bh,07h,05h,03h,01h,0
db 0,0,1,3,5,7,0Bh,0Eh,012h,017h,01Ch,021h,027h,02Dh,033h,039h
db 03Fh,045h,04Bh,051h,057h,05Dh,062h,067h,06Ch,070h,073h,077h,079h,07Bh,07Dh,07Eh,07Eh,07Eh,07Dh,07Bh,079h,077h,073h
db 070h,06Ch,067h,062h,05Dh,057h,051h,04Bh,045h,03Fh,039h,033h,02Dh,027h,021h,01Ch,017h,012h,0Eh,0Bh,07h,05h,03h,01h,0
db 0,0,1,3,5,7,0Bh,0Eh,012h,017h,01Ch,021h,027h,02Dh,033h,039h
chartable: ; 32 pairs of character code and color attribute
db 0B0h,05h,0B1h,05h,0B2h,024h,0B1h,024h,0B2h,081h,0DBh,01h,0B0h,029h,0B1h,029h,0DBh,029h,0B1h,023h,0DBh,023h,0B1h
db 6Bh,0DBh,06Bh,0B1h,04Bh,0B0h,04Bh,0B1h,042h,0B1h,04Ah,0DBh,04Ah,0B2h,0CAh,0B1h,04Eh,0DBh,04Eh,0B1h,0CEh,0B1h,08Eh
db 0B1h,0CCh,0B1h,08Ch,0B0h,08Ch,0DBh,04h,0B1h,088h,0B2h,088h,0DBh,08h,0B1h,08h,0B0h,8
frame: db 0
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und ein Python-Script, auszuführen mit richtigem Pfad für die Binärdatei "plasma_bic.p":
| Quellcode: | from struct import unpack
import math
print('10 SCREEN 0:LOCATE,,0:CLS:KEYOFF')
print('20 A=55000!:DEFUSR0=A')
print('30 READX$: IF X$<>"*" THEN POKEA,VAL("&H"+X$):PRINT ".";:A=A+1:GOTO 30')
print('40 A=&HD800')
print('50 READX$: IF X$<>"*" THEN POKEA,VAL("&H"+X$):PRINT ".";:A=A+1:GOTO 50')
print('60 X=USR0(0):GOTO 60')
linenumber = 1000
activesegment = 0
with open("plasma_bic.p","rb") as bf:
header = bf.read(2)
marker = bf.read(1)[0]
while marker != 0:
if marker == 0x81:
hdr, seg, gran, start, size = unpack("<BBBIH",bf.read(9))
data = bytearray(bf.read(size))
if activesegment == 1: # sin table and character LUT
for s in range (0, 256):
data[s] = int(math.sin(s*0.0245437*2)*63+63.5)
i = 0
endmark = ""
while size>i:
if size-i<=20:
endmark=",*"
print(linenumber,"DATA", ",".join([hex(d)[2:] for d in data[i:min(size,i+20)]])+endmark)
linenumber=linenumber+10
i=i+20
activesegment = activesegment + 1
marker = bf.read(1)[0]
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Letzteres sollte dann auf der Konsole dies ausgeben, was man natürlich auch in eine Textdatei umleiten kann:
| Quellcode: | 10 SCREEN 0:LOCATE,,0:CLS:KEYOFF
20 A=55000!:DEFUSR0=A
30 READX$: IF X$<>"*" THEN POKEA,VAL("&H"+X$):PRINT ".";:A=A+1:GOTO 30
40 A=&HD800
50 READX$: IF X$<>"*" THEN POKEA,VAL("&H"+X$):PRINT ".";:A=A+1:GOTO 50
60 X=USR0(0):GOTO 60
1000 DATA 21,0,d8,3e,49,d3,99,3e,0,d3,98,d3,98,3e,20,d3,99,e,19,6
1010 DATA 28,78,81,87,c6,0,6f,56,79,c6,0,6f,7e,92,e6,3e,24,6f,7e,d3
1020 DATA 98,23,7e,d3,98,25,10,e5,d,20,e0,3a,40,d9,3c,32,40,d9,6f,7e
1030 DATA 32,f1,d6,c9,*
1040 DATA 3f,42,45,48,4b,4e,51,54,57,5a,5d,5f,62,65,67,69,6c,6e,70,72
1050 DATA 73,75,77,78,79,7a,7b,7c,7d,7d,7e,7e,7e,7e,7e,7d,7d,7c,7b,7a
1060 DATA 79,78,77,75,73,72,70,6e,6c,69,67,65,62,5f,5d,5a,57,54,51,4e
1070 DATA 4b,48,45,42,3f,3c,39,36,33,30,2d,2a,27,24,21,1f,1c,19,17,15
1080 DATA 12,10,e,c,b,9,7,6,5,4,3,2,1,1,0,0,0,0,0,1
1090 DATA 1,2,3,4,5,6,7,9,b,c,e,10,12,15,17,19,1c,1f,21,24
1100 DATA 27,2a,2d,30,33,36,39,3c,3f,42,45,48,4b,4e,51,54,57,5a,5d,5f
1110 DATA 62,65,67,69,6c,6e,70,72,73,75,77,78,79,7a,7b,7c,7d,7d,7e,7e
1120 DATA 7e,7e,7e,7d,7d,7c,7b,7a,79,78,77,75,73,72,70,6e,6c,69,67,65
1130 DATA 62,5f,5d,5a,57,54,51,4e,4b,48,45,42,3f,3c,39,36,33,30,2d,2a
1140 DATA 27,24,21,1f,1c,19,17,15,12,10,e,c,b,9,7,6,5,4,3,2
1150 DATA 1,1,0,0,0,0,0,1,1,2,3,4,5,6,7,9,b,c,e,10
1160 DATA 12,15,17,19,1c,1f,21,24,27,2a,2d,30,33,36,39,3c,b0,5,b1,5
1170 DATA b2,24,b1,24,b2,81,db,1,b0,29,b1,29,db,29,b1,23,db,23,b1,6b
1180 DATA db,6b,b1,4b,b0,4b,b1,42,b1,4a,db,4a,b2,ca,b1,4e,db,4e,b1,ce
1190 DATA b1,8e,b1,cc,b1,8c,b0,8c,db,4,b1,88,b2,88,db,8,b1,8,b0,8
1200 DATA 0,*
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Die 2 org-Adressen im asm-Listing entsprechen den im RBASIC hinterlegten Startadressen 55000 und 0d800h.
VG,
Matthias
--
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Produktionen im Rahmen der "The Computer Art Community" (Demoszene): https://demozoo.org/sceners/64936/, YT-Kanal: https://www.youtube.com/@4lpha0ne/videos
Programmierung seit '86 in BASIC: KC85/3, C64, A1200, PC | ASM: LC-80, C64, KC87, A1200, NeoGeo, PC, Mega 65, µC | Turbo Pascal: BIC, PC | C: RS/6000, Alpha, PC, µC | C++, Java, Javascript, Rust, Lua, Perl, PHP u.a. auf PC
HW: LC-80, BIC A5105 komplett, KC87, KC85/2-4, KCC, C64s, C16, Plus/4s, A500s, A1200, Mega 65, ESP32s, RasPis, PCs, Laptops, MR 610, ...
Dieser Beitrag wurde am 09.11.2024 um 12:31 Uhr von Dresdenboy editiert. |
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Und wenn ich es richtig sehe, schlummern auch welche in Angeboten zum KSS o. KBM 1300, teils wohl auch in Prüfsteckern dazu.
