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About MueThor

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    Star Raider

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    OMG, yet another good former TI customer from Germany ;-)

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  1. Dear FarmerPotato and dear other members of this forum, FarmerPotato, thank you for your message. The reason for my request for help in this matter of a V9938 and V9958 minimal upgrade is that it only has been realized in the case of MSX1 computers (a minimal upgrade from MSX1 computers to MSX2 with only 16k VRAM): https://www.msx.org/forum/msx-talk/hardware/msx1-rgb-modification?page=0 . The basic idea for this modification is that the Spectravideo SVI 738 was an MSX2 computer model with only 16k VRAM. Unfortunately, I couldn't find an instruction for such a minimalistic modification for the TI-99/4A. Okay, this should be optional or only realized, if the V9938 doesn't work with the VRAM chips implemented in the console of TI-99/4A computers with RGB output for PAL modulators (hopefully this is correct, what I am writing). The latter is the case with the VRAM chips implemented in MSX1 computers as stated by l_oliveira (citation from a message of him in the link above): I want to connect it to a PAL modulator. Really? I didn't know that. So there exist programs, which run on consoles for NTSC, but don't run on consoles for PAL!? Of course there should occur as few as possible software problems utilizing the V9938 and/or V9958 minimal upgrade. I didn't know that V9938s are harder to come by than V9958s. Would a V9958 also work with only 16k VRAM? Now, if there is a way to realize a V9938 and/or V9958 minimal upgrade, can anyone of you give me an instruction and schematic drawings for the realization of such an upgrade? Regards
  2. Hi folks, Can anyone of you help me with an instruction and/or technical respectively circuit drawings for a simple as possible hardware replacement of a TMS9928A with a V9938 in the console of a TI-99/4A? Of course with retention of the 16k VRAM (yes, I know that you can address up to 192k VRAM with the V9938) originally implemented in this console, with as few as possible additions of extra ICs and modifications to already existing ICs. Regards
  3. Dear Lee Stewart and dear RXB, Excuse me for reacting so slow to your messages. I wasn't in the mood to comment on the statements of your messages the last days. Now I am going to comment on these statements: Fortunately, in your profiles images of you are visible. On the basis of them I come to the conclusion that you are about 10 to 15 years older than me. So way back, in the mid 80's to mid 90's, you weren't any more pupils going to school, but already employees earning regular income. Hence you could easily afford every add-on part for the TI then. Additionally, at that time, peripheral parts for the TI could be obtained more easily in the States than in West Germany. Furthermore, I can remember that the price for an TI Extended Basic cart amounted to about DM450 (German Mark) or $158 (the exchange rate during that time period was about $1 for DM2.85) in 1984. A price I could never have afforded without the financial aid of my father. At last, I couldn't afford at all a PEB inclusive 32k RAM card and 1(?, or maybe 2?) internal floppy disk drive(s) (purchasing price DM1000) or a nine needles dot matrix color printer (DM1200) and a TI side port to RS-232 adaptor (DM150) (I hopefully recalled the purchasing prices from my memory correctly). Regards
  4. Dear apersson850, You are not alone. I bet with you that there are some more persons in this forum, who are interested in different possibilities of what would have been possible, if way back the TI-99/4a console was unexpanded or at least a minimalist system already equipped with built-in 32k RAM and the Extended Basic cartridge. Don't forget, for most TI users nearly every add-on part was quite expensive then. Especially, when you have been a pupil at school. This question respectively objective mentioned before was and is the reason for my reawakened interest in the computer TI-99/4a. Additionally, it is also the reason, why I am not so keen on software needing "modern-day" solutions like F18A and SAMS. At last, with regard to this objective in my eyes the utmost allowable add-on part would be FinalGROM 99, which represents the hardware simulation for a cartridge. Regards
  5. Hello Omega-TI, You surely know the fastest way to find all games realized by Asmusr (beside games of other authors) with short descriptions and as downloadable files here: http://tigameshelf.net/ .
  6. Dear Asmusr, Please be so nice to upload from time to time a new video of the newest version of your Raycaster, too. Please upload the latest version of this program as a file for Classic99 as well. Will you possibly allow the final version of your Raycaster to run also using only FinalGROM 99 (of course with less graphical elements than in the case, when AMS is used)? Regards
  7. Now some stupid questions: You write that the resolution is 64x192. Not 192x64 (the images in your videos are broader in comparison to their height)? And will the Raycaster be really much slower, if you worked with a resolution of 128x192?
  8. Dear Asmusr, In your video below a problem can be seen in the sequence from 0:37 min to 0:42 min: Parts of the door seem to vanish and reappear or not in an illogical manner. Maybe you can somehow settle this problem. Regards
  9. Dear Asmusr, What is pictured on the shield, which can be seen from time to time in your game? To me it looks like a bloody chicken shot dead. Addendum: Okay, later on I saw that a dragon is pictured on the shield. How is about a black, white and red symbol resembling rather very faintly a N... German Swastika instead? Regards
  10. Hello PeteE, If this program runs on the console without 32K, do you use Harry Wilhelm's routine for starting Assembly code from Basic or how do you realize the execution of Assembly code on the bare console? Regards
  11. Hi Rasmus, Here a further suggestion from me : Please undemo following demo :
  12. Hello senior_falcon and all others, To me your game was self-explaining. Unfortunately, I was just allowed to vote for only one program in the category "Extended Basic Entries". I would also have liked to give a vote for senior_falcon's program. Probably there should have actually been created three categories for the voting poll: The catergory "TI Basic" and the category "Extended Basic" as well as another one "RXB". I suppose that it is a little bit unfair to only have created one category "Extended Basic".
  13. Dear HOME AUTOMATION, senior_falcon and all others, Thank you for your help. I finally got the programs to run on at least one of the two apps (V9T9 and Classic99). Now, when joysticks are needed for the games, does there exist a sort of module for the apps to replace these joysticks by keys of the keyboard? Regards,
  14. Hello all, How do I upload the program "TIP" into V9T9 or Classic99? I am unable to upload this program into either of the two simulation apps. In Classic99 I get following error message: "*WARNING: CHECK PROGRAM IN MEMORY *I/O ERROR 57" Regards
  15. Hello all, Does a link exist from which a file with module ROMs for V9T9 can be downloaded? Addendum: I am searching for a file including module ROMs of TI games. Thanks in advance. Regards
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