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ZX81 Video Driver — Parallax Forums

ZX81 Video Driver

blittledblittled Posts: 681
edited 2008-10-18 08:35 in Propeller 1
I was just playing Bagger's adaptation of the 3D Monster Maze and it took me back to my first computer, the Timex Sinclair 1000. I know there is a Spectrum video driver and I was wondering if there is one for the ZX81 as well since I would like to look into adapting my favorite ZX81 game, Mazogs. My dream list of prop projects is growing. smile.gif I'm hooked on the versatility and power of the Propeller.

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What electronics need - MORE POWER!!!!!!!

Comments

  • BaggersBaggers Posts: 3,019
    edited 2008-10-04 08:52
    blittled, my driver for the 3D Monster Maze game is a ZX81 display driver [noparse];)[/noparse] and I strongly agree with you on the versatility and power of the Propeller [noparse]:)[/noparse] it's great fun isn't it, it certainly is a great chip for programming, I love it. can't get enough of it. I would do it instead of work if I did't have to pay bills lol.

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    http://www.propgfx.co.uk/forum/·home of the PropGFX Lite

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  • blittledblittled Posts: 681
    edited 2008-10-04 14:56
    Thanks, Bagger. I downloaded the binary and was wondering if the source code was available for use since I couldn't find it on the propgfx forum.

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    What electronics need - MORE POWER!!!!!!!
  • AleAle Posts: 2,363
    edited 2008-10-04 16:27
    So did you liked Mazogs ? that was a game !. I had 10 when I played it back in the old days on a brazilian ZX81 clone (TK-85) I had. I made a Mazogs clone for the PC back in '91 and later for the TI-92. I simply love that game. The logic and everything is quite simple, but I've never been able to reproduce the maze generator routine :-(. Did you know that if you died fighting a mazog pressing space and entering GOTO 3000 re-did the fight ? (sorry if it is well known, I haven't looked for that in internet). Have fun
  • BaggersBaggers Posts: 3,019
    edited 2008-10-04 17:17
    Ale, nice find, nope I didn't know that [noparse]:D[/noparse]
    blittled, didn't I post the source?
    Thought I did, will fix that later, Have family round at the mo [noparse]:)[/noparse]

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  • blittledblittled Posts: 681
    edited 2008-10-08 01:46
    Ale, thanks for the hint. I tried it out on the Eighty One emulator. Now I'll have to dust off my old Times Sinclair 1000 and play Mazogs.

    Baggers, have you posted the source for the 3D Monster Maze?

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    What electronics need - MORE POWER!!!!!!!
  • AleAle Posts: 2,363
    edited 2008-10-08 07:04
    So... what we need now is a Mazogs clone ! of course, just keyboard and BW display !. I have the font somewhere in one of my projects...

    Side note: I just had a look at the "Cosmic Guerrilla" that I used to play... it is definitely not the same game I used to play, well it is but one of the two was heavily modified... I remember mine had two lines with the same number (quite cool) and it was mostly assembler, not like this one.

    Post Edited (Ale) : 10/8/2008 9:06:36 AM GMT
  • BaggersBaggers Posts: 3,019
    edited 2008-10-08 07:53
    Sorry Blittled, something came up, and I never got round to posting, sorry, here it is [noparse];)[/noparse]

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    http://www.propgfx.co.uk/forum/·home of the PropGFX Lite
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    ZX81_Display - Archive [Date 2008.10.08 Time 08.53].zip
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  • blittledblittled Posts: 681
    edited 2008-10-09 02:39
    Thanks Baggers! I'll have fun with this.

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    What electronics need - MORE POWER!!!!!!!
  • BaggersBaggers Posts: 3,019
    edited 2008-10-09 07:40
    no probs [noparse]:)[/noparse] enjoy, sorry it took so long to post [noparse]:)[/noparse]

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  • blittledblittled Posts: 681
    edited 2008-10-17 01:01
    Baggers, I uncommented the protodemo block but I only get a blank screen. Is it set up for PAL? I used NTSC. I looked at the mode variable and tried 16 combination which didn't work. What else is needed to be set up? Thanks.

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    What electronics need - MORE POWER!!!!!!!
  • BaggersBaggers Posts: 3,019
    edited 2008-10-17 07:07
    Hi blittled, I'll have a look first thing tomorrow, have too much work on today.

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  • BaggersBaggers Posts: 3,019
    edited 2008-10-17 19:01
    blittled, sorted it, was a last minute change to remove the mirror table, to now use the REV instruction and I did REV pixels,#8 instead of REV pixels,#24 as the instruction·REV ptr,#bits is reverse the lower 32-bits of long at ptr [noparse]:)[/noparse] that'll teach me to rush something else when my head is in my work for a deadline [noparse]:)[/noparse]

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    http://www.propgfx.co.uk/forum/·home of the PropGFX Lite
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    ZX81_Display - Archive [Date 2008.10.17 Time 20.00].zip
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  • blittledblittled Posts: 681
    edited 2008-10-18 00:27
    Thanks. it works! Baggers, your time and effort have been greatly appreciated

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    What electronics need - MORE POWER!!!!!!!
  • BaggersBaggers Posts: 3,019
    edited 2008-10-18 08:35
    enjoy blittled [noparse]:)[/noparse] and I'll look forward to your remake of mazogs [noparse];)[/noparse]

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    http://www.propgfx.co.uk/forum/·home of the PropGFX Lite

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