... It doesn't. The interrupt routine tests only the quit keys (i.e. [fctn] and [=], which can be done with only a few assembly instructions, because both keys...
... It's perhaps more tricky, but if you place the RAM expansion inside the console, like I did, you have the opprotunity to put it on the 16-bit bus, as well...
I am looking for a Very special Schematic diagram. The schematic diagram i am looking for is for the PROTO TYPE Project , code name ARMADILLO , This was a...
I have done it that way before ( but with the 4 6264lp's )and it does work well. But I have a few TI Percom disk controllers and thought it might be...
Class of 2006, Jim Peterson Achievement Award Ballot This is a call for VOTES for Class of 2006 Jim Peterson Achievement Awards. (Vote for only ONE nominee...
... I was wondering about that, with all the millions of TV sets that easily tune in those frequencies, yet no TV broadcasts in the spectrum to compete ...
Dan Olson
dano@...
Mar 1, 2006 4:03 pm
42226
... From: "Lee" <ab594yfn@...> Subject: [TI-99/4A] Schematic Diagram for : Myarc 512k Card and Foundation 128k Card Needed ... well this isn't a schematic...
To the TI-99/4A Designers. Is there a way to modify and put a second 32K Memory card into the PEB where 64K would then be the working memory limit? How would...
... Jim: If I recall correctly, TI had made an MMU chip called the 74LS612 which could be made to work but would be better used in an all new memory card. I...
How did they do it in the AMS? Been a while since I heard about this device...I had one ages ago. Know we have a few new folks joining us...the asgard memory...
You'd think if it was that easy, they would have done it with the various
other ram cards.. BUT none of them implemented any type of expansion of TI
memory...
In a message dated 3/1/2006 2:44:26 P.M. Eastern Standard Time, rick.fallstrom@... writes: If I recall correctly, TI had made an MMU chip called the...
The AMS memory was mapped to the TI's 64k memory space? I thought it was a
bank switch method just like the other ram cards just "faster/better/bigger"
---...
I have a question . Is it possible to use ( 2 ) converted MYARC 512K memory cards with the Geneve 9640. If not how do you ever reach the 2 meg limit of the...
... Yep, it was a card "without a DSR". Basically, it has page registers in memory (like a Geneve) but bank-switches in 4k banks (unlike a Geneve's 8k banks) ...
... Maybe referring to the 16K VDP RAM? You could have 8k at the cartridge port >6000, 8k on a peripheral >4000, you had .25k on PAD >8300, all with no...
... Yeah, the AMS card was and is the only "true" memory expansion for the TI-99/4a. It requires a different approach, though, to use. The normal TI doesn't...
In a message dated 3/1/2006 7:11:42 P.M. Eastern Standard Time, ironwolf@... writes: I'm not saying the "bigger" applications can't and don't exist....
Ok so my point was accurate. It doesn't provide memory in the standard
address space. It requires special programming etc.. You can't throw one in
and have 64k...
... It's not quite as simple as that. The TI has a 15-bit address bus, which allows it to see 32768 unique memory addresses. Which on the TI is 16-bit words,...
I have the documentation and program disks for Batch-It v1.0 and recently came across v3.0 of the program. Can anyone explain to me the differences between...
Update of February 11, 2006 The TI99ers On-Line User Group can be found at: http://www.ti99ers.org/ **************************************** UPGRADE UPDATE The...
ti99-4a@yahoogroups.com
Mar 2, 2006 3:46 am
42246
Has anyone had a problem getting the CYA Program to see and LOAD the SYSTEM/SYS FILE ? , How about the syntex being incorrect , i.e A:SYSTEM/SYS OR...
... One other idea that was kicked around at one point was using a 99000, I believe. Of course that assumes that you're basically replacing the TI console...
Dan Olson
dano@...
Mar 2, 2006 5:32 am
42249
... Some did, many never grew beyond the 64k limit, many (like Commodore and Atari) just had control bits to swap between ROMs and I/O hardware and actual...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
