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About Swim

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    Chopper Commander
  • Birthday 04/01/1947

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    Staten Island
  • Interests
    Ti/Geneve, Aquaculture

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  1. All EPROM versions prior to 1.6 may or may not work but are more likely to work using the Geneve than the 99/4a. The 1.6 EPROM should not be used without the complete upgrade which requires different hardware modding for each card in the series.
  2. I think I explained the WHT SCSI controller history here on AA in an SCSI thread a while back so a search for the long version of the history can be found if needed. Here's the short version on the WHT SCSI controller series history. I was the authorized WHT repair/upgrade station here in the USA until Competition Computer bought the rights for the WHT SCSI series "E", "F" and "G" boards. At that point Don requested I ship all remaining boards/chips I had to him and he shipped that inventory to Competition Computer as part of the sale. At this point any upgrades/runs of boards will need the permission of Competition Computer. Although many of the original "E", "F" and "G" cards did function on the Geneve most did not on the 99/4a. The 1.6 upgrade gave all three card verisons very stable operation characteristics with all available popular hard drives including ZIP and Syquest EZ-135 units. Hope this helps.
  3. Just for giggles shift338 do you have the correct orientation with the three resistor packs at location R1, R2 and R3?
  4. With the renewed interest in BBS exploration using old school hardware and a landline @110 baud through 56K connection speed the Hidden Reef BBS is found at 718-448-9402 running on real TI hardware 24/7. The Hidden Reef has a large download area for TI Geneve users to download directly to their 99/4a or Geneve. Once on the user's machine all that is necessary is to unarchive the file and run it the same as users would normally do with any native 99/4a/Geneve file. The Hidden Reef BBS is dedicated to the TI, CC40 and Geneve family of computers but all retro machine users are welcome. Enjoy your BBS travels, Richard Bell, SYSOP
  5. The latest version of Fred's DSR V12 is available for download on the Hidden Reef BBS 718-448-9402 24/7 for those that still have an old school 110 baud to 56k modem and land line hooked up to there 99/4a.
  6. Good point Mizapf. There are a few bug fixes after DSR V07 and everyone should be using DSR V12 now.
  7. How far are you from a decision? Weeks? Months? Is the "bare board only" still an option? I know you have the Genie 2.0 project going too so it's a time jam I'm sure.
  8. There are a few design problems with this controller card like many designs problems don't exist until the design makes it out into actual use. The 10K resistor location next to the heat sink at the bottom right corner needs to be placed away from the back edge of the card as it often gets knocked off when the card is inserted into the P-Box. I can't tell you how many of those I replaced for TIers that often swap cards in and out.
  9. This is a pic of the IDE controller with compact flash that has been running 24/7 for almost a decade in the Hidden Reef BBS P-Box and holds the up/down load files.
  10. Check with Ksarul on this as I recall he started a thru hole project for this IDE controller a year or two ago.
  11. Hi matthew180, the BQ4852YMC-85 carries the 512k SRAM on board so there is no need for a 512k SRAM at location IC23.
  12. Hi Fred, there is supply of BQ4852YMC-85 but Rochester electronics instead of no longer available Texas Instruments. https://www.digikey.com/product-detail/en/rochester-electronics-llc/BQ4852YMC-85/2156-BQ4852YMC-85-TI-ND/11538020
  13. My favorite solution for the IDE has always been the bq4852YMC-85 like the one listed here. The TI has gone obsolete but the Rochester one is still available. https://www.digikey.com/product-detail/en/rochester-electronics-llc/BQ4852YMC-85/2156-BQ4852YMC-85-TI-ND/11538020
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