Swim
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Posts posted by Swim
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In slo-mo
The electrolytic caps are no fun when they explode and fill the whole room with fuzz either.
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Is that multiple SCSI cards I see in the background! Nice....Now that's a tower!
Heh! 8 drives in one box is a beautiful thing. 4 for the Reef system and 4 for my main TI system.
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Ouch! I'm glad you had that case on too, Tim! Capacitor shrapnel is bad for biological creatures. . .
Maybe we should take up a collection and get the insane one a military grade vest to wear while testing/repairing/upgrading TI/Geneve hardware.
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Hi BBS fans. Finally got the chance to install the P-Box I recently refreshed by vaccuming out at least three decades of crud and installed a new stock fan. I replaced all the electrolytic caps in the power supply as well as the voltage regulators and checked all wire connections for good contact and correct voltage spec. I got lucky and no one tried to log-on the Reef while swapping in the refreshed P-Box. Reinstalled all the cards and booted the system with success.
The Hidden Reef hardware list
Consolerefreshed switching style pws with blue LED
32k on the 16 bit buss
3.58 Mhz crystal
F18A video adapter
Acer 17" LCD monitor
Realistic amplifier for sound
Hidden Reef P-Box
Refreshed TI interface card (Firehose card)
SNUG 3meg RAM Disk
MBP clock card
IDE controller with 4meg compact flash
TI RS232 1/2
TI RS232 3/4
CorComp floppy controller 2 3.5 floppies, 2 5.25 floppies
Rave speech card adapter
(All cards have blue LED)
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While you are at it don't be afraid to refresh the P-Box supply as well.
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The best practice when repairing these consoles is to upgrade the old "coffe warmer" supply with red LED to the later switching style supply. I usually add a blue LED and resistor to the later switching supply so I can tell by sight if it's a switching supply in the console. I usually also refresh the electrolytic caps.
(FYI, always take notice of any regulator part number in any TI power supply. TI sometimes used a fixed voltage regulator instead of the usual linear series regulator.)
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It worked from an audit perspective - sending commands to the CD ROM to play a music CD. I don't recall ever using it to read CD data. I used the "E" card with my EZ135 devices for years with no problems. But as you may recall, Geneve OS support was further ahead of the TI/EPROM support at the time, thanks to Mike's efforts.
Also you remind me a goodly number of "E" owners didn't seem to keep up with EPROM versions which may have added to mixed results with the "E".
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MY "E" card, unmodified, worked fine with the Geneve. I don't recall if I ever had it working with a TI as the last EPROM I had in it was 0.7 and I removed it since the Geneve didn't need a DSR on board. The card is currently out on "loan" so I cannot test it.
Do you recall using the "E" with a CD ROM player on the Geneve? I seem to recall "E" owners saying the card didn't work with CD ROM before the 1.6 upgrade. The "E" seemed to be a hit or miss controller or possibly not everyone tried the "E" with CD ROM.
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If we did make a new run of boards we should choose the "F" board and make the 32 pin PLCC part of the board instead of the two dip package chips and increase the size of the ground buss also a couple of changes too the power supply and we would have a very stable SCSI controller that would do what it is supposed to do with TI and Geneve.
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Here's a picture of the card I sent to Swim awhile back to see if he had upgrades. The TI /Geneve switch has been set to TI.
This is not a 1.6 updated card. The 1.6 update is a major update that involves a daughter board cut traces, 5pin dip switch, rewired traces and more. I doubt you will be able to get this card working doing what you want to do. I wish I knew what happened to competition computer. All the parts I had for doing the 1.6 upgrade to the WHT "E", "F" and "G" cards went to competition computer after Don sold the rights for the WHT SCSI.
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Nice job, Owen. I already purchased Gregg's software at the Chicago Faire. I will purchase this package and display it proudly next to my "Marcus of Marinus" package.
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Just an FYI here that the F18A 1.9 update package works as expected when the F18A is installed in a console with the 32k on the 16 bit buss running a 3.58MHz clock crystal. However, if you have just completed updating some F18A equipped consoles running at stock 32k and 3.0MHz clock speed and then move to update a 32k on the 16 bit buss console running a 3.58MHz clock crystal your heart may wind up in your throat and you may look for something to hold on to as the binary code rolls by almost faster than you can read it and you finish in almost half the time it takes to update a stock console. The F18A is a fantastic piece of hardware and the F18A firmware update software is a fantastic software package.
That is all.
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The update gave me a good 'excuse' to set up my F18A / CF7+ system today. It took me a while to figure out that my ubergrom UART/serial connection was plugged into a cable that went... nowhere. Ugh. Anyway, once I get the files transferred and update my F18A, I'll upload a TI archive to Heatwave, as a few people nabbed earlier updates that way in the past.
Edit: updated to v1.9 successfully and uploaded the files in the disk image.
Thanks for continuing the real TI file ARC tradition on Heat Wave. I mirror it on the Hidden Reef.
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I seem to recall baud rate parsing is done in the console ROMs? Parsing wait state and clock speed? Correct? I think user atrax27407, Hummingbird EPROMs, has ROMs with wait state and clock speed options available.
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For those that can't find cables locally and don't mind spending the bucks for decent cables. https://www.av4home.co.uk/cables/scart-cables/hi-performance-scart-cables/?msclkid=c0bf9fc555eb167277cec3ca4817bb76&utm_source=bing&utm_medium=cpc&utm_campaign=Dynamic%20Search%20Ads&utm_term=cables&utm_content=Cables%20(Dynamic%20Ads)
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Thanks, I'll post it on the Hidden Reef BBS as November 2, 2019.
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Has the date been set for the next Chicago world faire?
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Nice I've found with TIPI that the pi is pretty much just hanging out waiting for the TI's bidding. Haven't hooked them up to their own displays.. no need in fact they are so easy to ssh or telnet in and work on there's really no need
Sent from my LG-H872 using Tapatalk
Believe it or not some TIers might use the PI for other projects in addition to the TI/Geneve.
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Hi Shift838, finally might get a chance to hook up my GBSVGA GENIE AVPC rig on my SNUG system this weekend. It's been a while since I got these parts and I've forgotten if there was a site setup with the doc for hooking this up? Were docs shipped with the parts or is there a .pdf or doc site? Thanks.
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I use "Fishtank 5" all the time. Fish tank "5" added "Shark Tank" to "Fish Tank 4." Greg has had serious medical issues over the past few years and is now in recovery. Greg is an outstanding programmer and has other software in addition to his "Fish Tank" series. Hopefully he will once again take up programming when he is able.
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I checked my Myarc notes and found no reference to this fix, though most of the cards I worked on were the various controllers and geneves. The Myarc serial port update article is in Micropendium and in one of the old FAQ, of course that doesn't help the parallel port situation.
Can you share a picture or two of the card itself, component and trace side? I can compare it with my Myarc card for giggles. Who knows, it might trigger a memory or two from those of us who have worked on the cards in the past.
If I get a chance this weekend I'll try to find exactly what this mod is. I just don't want to blurt something out and give people a bum steer. It might be something as simple as swapping a resistor value. I seem to remember the Panasonic 9pin printers were especially vulnerable to this spike. What a workhorse the Panasonic 9 pin printer was. I still have mine. I printed box after box of tractor feed paper through that thing. Plenty of ribbons too. Do they still sell tractor feed paper anymore? lol
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Could this spike be related to the random print buffer overflows and phantom incoming data my HP LaserJet experiences when my PEB is switched from ON to OFF?
I hesitate to say what the cause of the problem is other than to say it's an easy fix. Like I say it's been over a decade since I've modified one and I just don't recall.
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One thing I recall about the MYARC RS232 was that it could spike some printers and there was a simple mod to fix that problem involving a resistor. I've done the mod to a number of MYARC RS232 cards but it's been a decade or two and it's a little fuzzy in my grey matter currently but certainly not reason to scratch MYARC RS232 ownership off the list for people that are trying to expand their systems. If I can find my notes on this simple mod I'll post it. Anyone else remember the mod specifics?
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Electronic part guidance
in TI-99/4A Computers
Posted
For anyone interested in images of the original installation.