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humeur

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Posts posted by humeur

  9. Posted

    OPA announced a TMS99xxx processor plug in for the console in MicroPendium with 12 MHz operation speed. As far as I remember the board should be clipped just over the 9900. I ordered a TIM and hoped to buy these device too, but the TIM was not shipped to me and the 'Speedboard' was never released. A few days back I was looking for the SBP9989NL (4.4MHz, 64 pin, 16 bit data bus, 9995 instruction set, 128K ram addressable, ... ) on the internet, if it might be a replacement for the TMS9900 in the console, but the price is exorbitant. So this is cancelled. There was also an advertisement in MicroPendium issues about a p-box card with a forth microprocessor on it, which promised a lot of speed. Sad to say that nobody ordered this card.

     

    i have a SBP9989 a picture of this

     

    i292_sbp9989.JPG

  10. Posted

    OPA announced a TMS99xxx processor plug in for the console in MicroPendium with 12 MHz operation speed. As far as I remember the board should be clipped just over the 9900. I ordered a TIM and hoped to buy these device too, but the TIM was not shipped to me and the 'Speedboard' was never released. A few days back I was looking for the SBP9989NL (4.4MHz, 64 pin, 16 bit data bus, 9995 instruction set, 128K ram addressable, ... ) on the internet, if it might be a replacement for the TMS9900 in the console, but the price is exorbitant. So this is cancelled. There was also an advertisement in MicroPendium issues about a p-box card with a forth microprocessor on it, which promised a lot of speed. Sad to say that nobody ordered this card.

     

    the SBP9989 is I2L technologie is not a same of the tms9900.

     

    jl

  18. Posted

    Well, having all the chips socketed makes the repair a lot easier, and does offer the option to brute-force the repair by swapping each part in turn until it works. Word of caution, there are a *lot* of variations of 74-series logic chips, so if you are going to attempt the repair yourself, make sure you buy *exactly* the same chip as the original, with all the same letters and numbers. For example, none of these are compatible, even though the numbers of the part number may be the same:

     

    74LS04 74HC04 74HCT04 74LV04

     

    There are more, but I think you get the idea.

     

    use LS HCT, HC is cmos technology no compatible with ttl signal level .

     

    jean louis

  20. Posted

    floppy drive speed can be changed, on certain model

     

    jean Louis

     

    I have a couple of TEAC drives which have this ability. I am patiently awaiting the next run of KryoFlux boards, and especially software with WRITE capability; any idea when this will happen?

     

    you want to change the speed of your drives ??

     

    jean louis

  22. Posted

     

    :lust: I wish much to realize it!

     

    ehm... :lust: I want to realize it a lot! (so it's correct!)

     

     

    ...By jean louis:

     

    the tms2532 of texas instruments is not a same of 2732, a11 is pin 18 of tms but a11 is on pin 21 of 2732.

     

    @ jean louis: But for use tms2532ajl, what is the binary address I have to start program? Do you know I need an adapter for my programmer to ability it for those eprom series? Or it's impossible with my programmer? Thanks!

    http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4312

     

    i have look your documentation for your programmer

    read juste read the tms2532A

    read and write the tms2532jl

     

    are you sur of reference of your component.

    have you erase your EPROM 20 minutes ??

     

    jean louis

  24. Posted

    I also read that the mechatronics official dealers proposed the Supergraph upgrade from the Extended Basic 2 card, in modifying the cardridge directly in shop... ( free eprom slot inside or eprom swap ? ).

     

    I do not know this things about Supergraph upgrade... sorry...

     

    this is the internal cart of one of mine XBII ;)

     

    for upgrade change the n82s23 prom for adress decodage, and change one rom.

     

    the prom is not more easy to find.

     

    jean louis

  25. Posted

    HI. I'm new. I'm Italian and Excuse my English!

     

    I like reprogramming Atari 2600 cartridige and restoration them. But I've a problem with EPROM TMS2532Ajl (The only easily findable after 2716 or 2732 series)

    I use GQ-4X universal programmer (Willem derivative) and it supports these TMS2532JL eprom series. The utility is GQ USB Prg Re6.00. It read them and the blank check and verify are ok.

    I load games.bin, I click on "write eprom" but when it reach at 4% of the writing process, I gives me the following error: "write failure, Adress=0x000000, Buffer=0xE7, Device=0xFF" :sad: .

    What is the mistake? :?

     

    the tms2532 of texas instruments is not a same of 2732, a11 is pin 18 of tms but a11 is on pin 21 of 2732.

     

    jean louis

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