EPROM Burning Service

[atrax27407]

For the last 16+ years, I have been offering an EPROM burning service through "Hummingbird EPROMS". Lately, I have seen some comments in various threads from members looking for a particular game cartridge or DSR, The games are wanted, not as a collector, but so the member has access to play the game.

 

I offer two types of EPROMs:

 

DSRs - I have almost all of the TI and third-party original DSRs and modifications (i.e., 80 trk TI Disk Controller, MG mods for the Corcomp, and many of the Myarc variants).

 

Games - I have a wide range of games. Those that have "escaped into the wild" as original TI (and thrid-party) cartridge dumps and others that have been posted here on Atariage in individual threads and in the .BIN Repository for general download. I do not supply actively marketed games.

 

I DO NOT SUPPLY FINISHED CARTRIDGES! These are the EPROMS necessary to build your own cartridge. You will have to buy an appropriate cartridge board ( Arcade shopper has them) and supply your own cartridge shell. Mine is a "break even" operation and the going rate is $6 per EPROM which pays for the replacement of the blank EPROM and postage. If anyone is interested, send an email to:

 

Rmcarmany@aol.com with EPROM in the Subject header. If I can supply you with the EPROM that you need, I will be glad to help.

[Shift838]

For the last 16+ years, I have been offering an EPROM burning service through "Hummingbird EPROMS". Lately, I have seen some comments in various threads from members looking for a particular game cartridge or DSR, The games are wanted, not as a collector, but so the member has access to play the game.

 

I offer two types of EPROMs:

 

DSRs - I have almost all of the TI and third-party original DSRs and modifications (i.e., 80 trk TI Disk Controller, MG mods for the Corcomp, and many of the Myarc variants).

 

Games - I have a wide range of games. Those that have "escaped into the wild" as original TI (and thrid-party) cartridge dumps and others that have been posted here on Atariage in individual threads and in the .BIN Repository for general download. I do not supply actively marketed games.

 

I DO NOT SUPPLY FINISHED CARTRIDGES! These are the EPROMS necessary to build your own cartridge. You will have to buy an appropriate cartridge board ( Arcade shopper has them) and supply your own cartridge shell. Mine is a "break even" operation and the going rate is $6 per EPROM which pays for the replacement of the blank EPROM and postage. If anyone is interested, send an email to:

 

Rmcarmany@aol.com with EPROM in the Subject header. If I can supply you with the EPROM that you need, I will be glad to help.

 

I can attest that Bob does a great job and is very affordable. Not to mention fast shipping service. I ordered my Geneve 1.0 boot EPROM and had it 3 days later even before I had my Geneve in my hands! He has burned many eproms for me over the last few years.

[+arcadeshopper]

I can't recommend Bob enough. If you buy eproms on arcadeshopper I send the orders directly to Bob for processing and delivery.

 

Greg

[sparkdrummer]

+1 on Bob. I have purchased chips for my Corcomp disk controller cards, Foundation 128k cards to make them work as a Myarc 128k and one for one of my Corcomp mini systems. They worked beautifully.

[+Schmitzi]

Same same. Very reliable service from Bob. Thanks for helping all the time !

[digdugnate]

oh this is cool! definitely bookmarking. Thank you for offering this service!

[atrax27407]

As I get older, I forget a few things. My memory was jogged about the CorComp Micro Expansion System. Checking my inventory, I do have a version of the DSR for it that removes the annoying CorComp power up screen.

[RickyDean]

As I get older, I forget a few things. My memory was jogged about the CorComp Micro Expansion System. Checking my inventory, I do have a version of the DSR for it that removes the annoying CorComp power up screen.

I have changed all my logic chips, TMS 4500, 9901 and checked sockets for shorts on my Micro Expansion and only get the power up screen. Extended Basic does not see the 32k memory and does not access disks. Do you have the original eprom as well as the version mentioned here. Like my Corcomp peb card, I am suspecting a bad PAL, but want to change everything else, that I can't test to be sure.

[atrax27407]

I certainly do have it. Send a message to my email address in the first post and we can make the arrangements.

[atrax27407]

I have recently revisited a project that I started in 2004 with the TI RS232 card. It involves slightly changing the baudrate table. The new baud rates would be 300, 600, 1200, 2400, 4800, 9600, 19.2K, and 38.4K as "native, selectable baudrates. The prototype will be going out for testing in the next couple of days. If the tests are successful, the next step will be to add a true backspace to the card as well as solving the problem of the shared interrupt line. That will allow it to live peacefully with the third-party 80-column cards (i.e., AVPC and EVPC) when using a modem. Of course, it would also work with 40-column systems as well. I'll keep everyone posted on the tests and progress with the DSR.

 

Once the TI version is complete and working, there should be little problem creating versions for both the Myarc and CorComp RS232 cards.

[sparkdrummer]

I'll be signing up for 2 of them! 38.4 will appreciably speed up my newsletter production.

[atrax27407]

The modifications are essentially done. The selected altered baudrates worked many years ago and if they are solid, the rest has been incorporated into the DSR as of now. Just waiting for confirmation on the baudrates.

[atrax27407]

The response to the increased baud rate versions of the TI and Myarc RS232 DSRs has not been promising and the few private conversations have been discouraging. As a result, I am releasing the code 'as is'. The coding is finished and the selected baud rates were working in a similar EPROM that I produced in 2004. Feel free to download and burn your own if you wish. The TI RS232 requires a TMS2532 chip and the Myarc requires a 2732, Enjoy!

ti_rs232hs.bin

my_rs232hs.bin

[atrax27407]

Comments and instruction:

 

"TI and Myarc High Speed RS232 DSR

 

 

 

This version of the TI RS232 DSR makes changes to the available baud rates. The lowest baud rate (i.e., 110 bps) has been eliminated. The new list of selectable baud rates is: 300 bps, 600 bps, 1200 bps, 2400 bps, 4800 bps, 9600 bps, 19.2K bps, and 38.4 bps. You will, of course, need a terminal program and Modem that are capable of the increased transfer speed.

 

 

The “high speed” version DOES NOT contain the modification that allows the TI RS232 to function with an 80-column system (like the AVPC or EVPC Cards) and interrupt-driven telecommunications programs (i.e., TELCO). If you have one of these 80-column cards in your system, you will either have to use a telecommunications program (like OMEGA) that is NOT interrupt-driven. With TELCO and TI's single interrupt line, you will get about a page of data before the program ingloriously crashes. Had they remained in the market, TI would have eventually had to address the problem of the shared interrupt line.

 

 

To upgrade your TI RS232 card, you will need a socket in place on your RS232 card to replace the original DSR chip with the new EPROM. I put sockets in all of my PEB cards some years ago. TI hard-soldered the original DSR chip in place so it will have to be "surgically removed". Once it is out, replace it with a 24-pin socket and thoroughly check all of your solder joints for continuity. Remember to orient the socket with the notch facing the same direction as the notch on the original chip. Then, place the new EPROM in the socket oriented exactly in the same direction. The Myarc RS232 DSR chip is socketed and all that is required is to swap chips making sure that the new chip is facing the same direction as the old chip.

 

 

If you install this mod, for evaluation purposes, I would like to know which cards you have in your system, how it is configured, and the programs with which you are using to test the EPROM. Certainly, there are some system configurations and programs that will not accommodate or react well to the higher baud rates and will not work satisfactorily with the DSR chip. Remember, this is a new upgrade and it may have some bugs lurking within the code.

 

 

 

DISCLAIMER

 

 

I do NOT warrant that this EPROM version will suit your computing needs. Since it involves the replacement of the existing DSR chip and the alteration to the RS232 card itself, I will not be responsible for any damages caused by such alterations and installation. In short, if you are an "electronic klutz" and bugger up your RS232 card, TOUGH!!