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transferring games from pc to ti99 4a


bradhig1

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Ah, I have a mirror of WHTech, but I searched for the file with lowercase letters... OK, found it.

 

The difference is easy to see with audacity (did that rhyme?):

 

MAME can read the recordings from a real console. In contrast, its cassette output is a square wave. It can be loaded safely within MAME again, but if things are what you reported, then the square wave is not accepted by the TI console. That's unfortunate. I'm not sure how to fix this, since I was never really involved with the cassette subsystem. And if I try to fix this, I have no means of verification with a real system.

 

wavfile.png

mamewav.png

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19 hours ago, mizapf said:

Ah, I have a mirror of WHTech, but I searched for the file with lowercase letters... OK, found it.

 

The difference is easy to see with audacity (did that rhyme?):

 

MAME can read the recordings from a real console. In contrast, its cassette output is a square wave. It can be loaded safely within MAME again, but if things are what you reported, then the square wave is not accepted by the TI console. That's unfortunate. I'm not sure how to fix this, since I was never really involved with the cassette subsystem. And if I try to fix this, I have no means of verification with a real system.

 

wavfile.png

mamewav.png

 

 

I took the MAME square wave and processed through CS1ER which creates a sine like wave as output.  See if real hardware reads the attached.

 

 

 

k-mart-cs1er.wav.zip

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On 3/7/2023 at 10:44 PM, bradhig1 said:

The problem I ran into was that some dsk images would work with one version of Classic 99 and not another version.  Still need to get them on cassette.  Been looking at PEB's on Ebay.  Are there disk drives that plug into the expansion port on the TI99 4a?

In answer to your disk drive question, there ARE disk drive systems that plug into the side port. TI made a sidecar disk controller before they made the PEB (uncommon, SSSD only, and eats a lot of desk space as you have the sidecar plus the drive(s)); Percom Data TX99 (rare, but the drive and the controller are in a single case), CorComp 9900 sidecar (somewhat HTF but attainable, includes 32K and RS-232 but drives need to be in their own case), Myarc MPES 50 (really hard to find, includes 32K and RS-232 with drives built-in). In Europe, there was also the Atronic CPS-99 (like the CorComp and Myarc offerings, and was one that included a built-in drive or two),and also a CorComp clone sidecar controller from Regle de Calcul (apparently, it was only available in France).

 

None of these options would be inexpensive, as most of them have collector value. The more modern alternatives already identified in this thread won't set you back quite as much.

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On 3/8/2023 at 11:36 PM, HOME AUTOMATION said:

this works fine on real hw with my media player I use to play wav's from a sdcard..   https://www.arcadeshopper.com/wp/store/#!/cassette-USB-player-converter/p/483630166/category=0

 

the redone file later here with cs1er does NOT work it's muddy/quieter

 

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