Hi, this a little 64 byte demo of mine I thought I might share here..
MAGIXFLY.ZIP (9k)
This is an old-school DOS/VGA graphics demo program.
It gives the (classic) effect of flying over a changing landscape.
The x86 assembler source code (MAGIXFLY.ASM) is included, and there are comments with suggestions for changes, if you want to experiment.
It can run on an 8086 (or later) PC with VGA under MSDOS/Freedos. An FPU is not needed.
For modern PCs, it will run on Linux/Windows in DOSBOX, or other emulators.
To run, boot DOS and type:
MAGIXFLY.COM <ENTER>
Hit ESC to exit the demo. Type CLS or MODE 80 to return to 80 col display.
All variables held in registers, which makes the code smaller/faster.
AX,DX,SI are temp calc regs.
DS (data seg) points to VGA screen (A000h)
BX = Pixel position for plotting.
CX = time (frame count)
DI - Y position (for fx calc)
BP = X position (for fx calc)
It uses the open source NETWORK x86 assembler, NASM, but can easily be adapted to others.
Build with: NAS2COM magixfly
or NASM -f bin magixfly.asm -o magixfly.com
The demo isnt wildly new/original, but does have a few little ideas of its own, and it all neatly fits into 63 bytes. Enjoy!
MAGIXFLY.ZIP (9k)
This is an old-school DOS/VGA graphics demo program.
It gives the (classic) effect of flying over a changing landscape.
The x86 assembler source code (MAGIXFLY.ASM) is included, and there are comments with suggestions for changes, if you want to experiment.
It can run on an 8086 (or later) PC with VGA under MSDOS/Freedos. An FPU is not needed.
For modern PCs, it will run on Linux/Windows in DOSBOX, or other emulators.
To run, boot DOS and type:
MAGIXFLY.COM <ENTER>
Hit ESC to exit the demo. Type CLS or MODE 80 to return to 80 col display.
All variables held in registers, which makes the code smaller/faster.
AX,DX,SI are temp calc regs.
DS (data seg) points to VGA screen (A000h)
BX = Pixel position for plotting.
CX = time (frame count)
DI - Y position (for fx calc)
BP = X position (for fx calc)
It uses the open source NETWORK x86 assembler, NASM, but can easily be adapted to others.
Build with: NAS2COM magixfly
or NASM -f bin magixfly.asm -o magixfly.com
The demo isnt wildly new/original, but does have a few little ideas of its own, and it all neatly fits into 63 bytes. Enjoy!
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