Rotastic by Desire [web]
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//\ / \\ /\\
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// / / /\ \\ \ \\
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\\ \ \ // / // \ \\
\\ \ \// / // \//
\\/ / // //\
/ // // \
\// // \
// \
//\ // \
// / // /\ \
// / // / \\ \
// / // / \\ \
// \ \\ \ // /
// /\ \ \\ \ // /
// / \\ \ \\ \/ /
// / \\ \ \\ /
\\/ //\ \\ \ \\ /
// \ \\ \ \\ /
// /\ \ \\/ \\ /
// / \\ \ \\/
// /___\\ \
// _______ \ ssss
\\/ \\/sssssssss s
ssss ssssss
ssss ssss
sssss ss
ssss s
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sssss
ssssss
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s sssssss
ss sssssss
ssss ssssssss
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ssssssssssss
ss sssss
_____________
!_____ _____!
! !
! ! //\
! ! \\ \
! ! \\ \
! ! \\ \
!_! \\ \
\\ \
\\ \
QQQ \\ \
QQQ QQQ \\/
QQQ QQQ
QQQ QQQ
QQQ QQQ
QQQ QQQ QQQ
QQQ QQQ QQQ
QQQ QQQ
QQQ QQQ QQQ
QQQ QQQ
QQ
uuuuu uuuuu Q
uuu uuu
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uuuuu
//\
// /
// /
// / /\\
// / / //
\\/ / //
/ // /\\
/ // / //
\// / //
/ //
/ //
\//
- r o t o t a s t i q u e -
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thanks to sensenstahl for the nfo
(released as "rotastic" though ;)
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Info:
32 bytes tiny intro for MSDOS
by HellMood / DESiRE
shown at Outline 2017 / 128b compo
please run on WinXp Dos / DosBox
http://youtu.be/SlaLVU4YQLA
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Background:
after ryg and gargaj created 51b/49b
rotozoomers for MSDOS back in 2002
( area51 , 49broto )
i asked myself, if doing this in 32b
would be possible and well, it is =)
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Code:
org 100h
dw -0x0140
X: xor al,bh
cwd
or al,0x13
int 10h
mov ax,cx
idiv word [si]
mov bx,ax
imul bx,bp
add bh,dl
imul dx,bp
sub al,dh
mov ah,0x0c
loop X
dec bp
jmp short X
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the chosen bios pixel set approach
can be awkwardly slow on some GPUs
so there is "rotosafe" (32b) which
works safely on all platforms with
the usual direct access, it zooms
and rotates repeatedly by only 45░
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org 100h
push 0xa000
pop es
mov al,0x13
int 0x10
X: db 0x0f
mov al,dl
mul byte [bx]
mov al,dh
sub dh,ah
mul byte [bx]
add dl,ah
xor dl,dh
xchg dx,ax
stosb
mov ax,0xcccd
mul di
jmp short X-1
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Greets:
sensenstahl, homecoded, rrrola, frag
Optimus, Trixter, igor, gargaj, VileR
Whizart,g0blinish,Rudi,ryg,Orby a.k.a.
orbitaldecay,wysiwtf,Kuemmel,p01,Elias
Oscar Toledo,Drift +all DESIRE members
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Contact:
helmut.toedtmann@gmail.com
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