Is there a way to take a ribbon cable, solder one end to a chip socket, the other to a female card edge connector and be able to program a cartridge, say a ...
Of couse, I'd guess I'd need to be able to ERASE the original? I suppose Romox may have been able to reprogram via the card-edge but still had to open it to...
In a message dated 11/1/2004 7:27:29 AM Eastern Standard Time, ti99_forever@... writes: without having to hack the Romox, remove the soldered Eprom, put...
In a message dated 11/1/2004 7:43:24 AM Eastern Standard Time, ti99_forever@... writes: Of couse, I'd guess I'd need to be able to ERASE the original? I...
If I remember correctly, you just put the cartridge into the machine and it removed the old program and loaded a new one. By this I assume they had a way to...
In a message dated 11/1/2004 9:12:05 AM Eastern Standard Time, ti99@... writes: If I remember correctly, you just put the cartridge into the machine ...
The source should be up on whtech already, and should be under the 9640news folder somewhere as it was posted on Genie eons ago. Use one of the search engines...
... then it ... using to ... It usually ... (I cheated and blew up the picture) Its a HN4827646 or the last character could be a g. No matter it is a standard...
Hi Richard, I'm not familiar with EPROMS, but is there a write protect bit that gets set when you write to the cartridge to prevent you writing over the...
Maybe i'm a little bit out of the loop, but the purpose of the UV lamp is to reset the bits. I don't know which way it is, but either the bits are set on or...
Update of November 1, 2004 The TI99ers On-Line User Group can be found at: http://ti99ers.org/ Included in the TI99ers On-Line User Group are the same things...
ti99-4a@yahoogroups.com
Nov 1, 2004 7:32 pm
34456
How about EEPROM?? Dan...
Dan Olson
dano@...
Nov 1, 2004 7:39 pm
34457
The difference between EPROMs and EEPROMs is that the latter can be electrically erased with the proper current. That is what ROMOX used in their cartridges....
Aww man and I was just about to ask what kind of compression ratio you got
on that ZIP socket :)
Greg
> -----Original Message-----
> From: rmcarmany@......
... So, an EEPROM doesn't have this clear window? I have a ROMOX cartridge which definitely has a chip with a clear window on it... I just found it yesterday...
Some do and some don't have a window. Most likely, if it has a window, it is an EPROM. ROMOX never got their idea of "drive in" cartridge programming off the...
Ok, to add more mud, I checked out one of my romox packages, and it states: Reusable Blank Cartridge So I opened it and scanned the chip that was inside of the...
The chip is a 2764 EPROM with a 21V Vpp. Both EPROMs (E)rasable (P)rogramable ROM and EEPROMs (E)lectrically (E)rasable (P)rogramable ROM are reusable. They...
Yes, I agree, but you did not have to take these apart to reprogram them in the machine.. you just put them in the slot. I can't imagine taking them apart and...
Look at the picture of the programmers under the technology tab and it says that there was a cartridge eraser at the right side of the monitor housing. Maybe...
Hal; Dallas and I will not be able to attend the TI Faire this year although we are very interested. Maybe you could send us any literature or goodies ...
I did miss that. I looked at the cartridge, did not see any way that the uv could bounce around. I did examine the case a little more and found a much easier...
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