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#75630 - 12/25/11 12:38 AM Re: T/A Alphatronic PC? [Re: Spirantho]  
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Lord Nightmare Offline
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The victor 9000/sirius 1 uses the usart to stream data to the hc55516 CVSD decoder which runs the speaker (and, if you have installed it, from the microphone input module, I believe. I have some software from the latter that I need to dump), so any USART inprovement should help both.

The 32k HN613256 chip needs to be desoldered (and have both 16k halves dumped as 27128 as you said), although the bottom half is almost certainly the same as 2 of the 3 8k chunks of basic code (the top half should be the third 8k chunk and possibly 8k of the ipl bootloader or an older version of it than the one on the 2764, or blank space. could also be hidden machine credits too.)

LN


"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"
#75632 - 12/25/11 02:12 AM Re: T/A Alphatronic PC? [Re: Lord Nightmare]  
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mahlemiut Online content
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mahlemiut  Online Content
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The Victor 9000 uses an MC6852, and that at least has rx/tx data callbacks set up. smile

EDIT: Looking at the mc8652 code, it looks like no callbacks are ever triggered...

Last edited by mahlemiut; 12/25/11 02:17 AM.

- Barry Rodewald
#75637 - 12/25/11 08:18 AM Re: T/A Alphatronic PC? [Re: Spirantho]  
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Lord Nightmare Offline
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Gah, yes, you're absolutely right. I keep mixing the USART and the SSDA mc6852 up.
datasheet for the latter is available on bitsavers, btw.
http://www.bitsavers.org/pdf/motorola/_dataSheets/6852.pdf

LN


"When life gives you zombies... *CHA-CHIK!* ...you make zombie-ade!"
#75706 - 12/29/11 09:36 AM Re: T/A Alphatronic PC? [Re: Lord Nightmare]  
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Anna Wu Offline
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Anna Wu  Offline
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I made a simple color test . Just use the "CLOAD" command to load the tape.



#75746 - 12/30/11 10:38 PM Re: T/A Alphatronic PC? [Re: Anna Wu]  
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Spirantho Offline
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I did a quick colour test on my Alphatronic:



Ian Gledhill
Check out our shop of 8-bit goodness http://www.mutant-caterpillar.co.uk/shop/
#75747 - 12/31/11 12:10 AM Re: T/A Alphatronic PC? [Re: Spirantho]  
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mahlemiut Online content
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mahlemiut  Online Content
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Corrected the palette, should be about right:



- Barry Rodewald
#75754 - 12/31/11 06:36 AM Re: T/A Alphatronic PC? [Re: mahlemiut]  
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Anna Wu Offline
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Anna Wu  Offline
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The color range seems to be ok now. smile

#75777 - 01/02/12 09:11 AM Re: T/A Alphatronic PC? [Re: Spirantho]  
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Robbbert Offline
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Wonder if Spirantho could make a cassette recording for us...

#75778 - 01/02/12 10:20 AM Re: T/A Alphatronic PC? [Re: Robbbert]  
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mahlemiut Online content
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mahlemiut  Online Content
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Yeah, then we can hopefully figure out the correct clock for the 8251/cassette, or at least a closer approximation.


- Barry Rodewald
#75832 - 01/04/12 01:03 PM Re: T/A Alphatronic PC? [Re: mahlemiut]  
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Spirantho Offline
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What, you mean http://www.mutant-caterpillar.co.uk/ian_stuff/TA_Hi.flac.

Note the TA has variable baud rates (that's what the dip switch is for...)


Ian Gledhill
Check out our shop of 8-bit goodness http://www.mutant-caterpillar.co.uk/shop/
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