Road Fighter graphics

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By RasmusM

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31-12-2013, 10:29

Can anyone explain how the maps in Road Fighter are stored/compressed in the ROM? I'm thinking about porting the game to the TI-99/4A. Thanks in advance. Smile

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By edoz

Prophet (2169)

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31-12-2013, 11:46

In the past I had also a TI-99/a4 (Very nice computers) I remember space invaders Big smile
It was a 16 bit's not ?

By Poltergeist

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31-12-2013, 12:43

The TI processor is 16bits, indeed. However, there was only 256 bytes of scratchpad RAM, and BASICprograms were stored in the VRAM. Because of that, the BASIC programs where slow. Very slow. And although the videoprocessor of the MSX is the same as that in the TI99/4a, you could only use one type of screen (from BASIC), which is screen1 on MSX. But from assembly, it should be possible to do everything an MSX can, and more...

That said: I don't know how maps are stored in Road Fighter...

By RasmusM

Supporter (3)

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31-12-2013, 13:03

I recently ported another Konami game, Scramble, to the TI-99/4A, see:
http://www.youtube.com/watch?v=O-ztNoK1dOo

By edoz

Prophet (2169)

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31-12-2013, 13:35

Smooth scrolling! You can see there is a lot of CPU power available!

By RasmusM

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31-12-2013, 14:05

Yes it appears so, but actually this is all done by switching between pre-loaded pattern tables. Big smile

By dink

Expert (73)

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01-01-2014, 05:14

Very nice Scramble port! I'd love to see it ported to MSX though, as the Aackosoft Skramble clone isn't very good..

By ARTRAG

Enlighted (6229)

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01-01-2014, 10:27

Nice scramble version! would it be possible to port it to msx ?
do you have released asm sources and other tools to start with ?

By edoz

Prophet (2169)

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01-01-2014, 11:38

Indeed very nice game.. I was wondering which sound chip is in this machine ? It sounds a lot like a BCC acorn.

By Poltergeist

Champion (272)

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01-01-2014, 11:54

I think it's the same as in MSX computers. At least the specs are the same: 3 channel, 1noise channel...

By jltursan

Prophet (2150)

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01-01-2014, 12:48

¡Nice version indeed! Big smile
At first I was thinking you ported the Tutor version, being the Tutor the closest machine to the TI; but you've done a great job creating a new rendition of the game.

A MSX version need to be programmed from scratch as the TMS 9990 processor is nothing related to the Z80 :( . Only graphics and general approach can be exported.

About Road Fighter, no idea how the maps are stored :(

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