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Bit3 Full View 80 (Under The Hood)

Bit3 Full View 80

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#26 perry_m OFFLINE  

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Posted Thu Feb 12, 2015 12:46 PM

I have added Bit3 Emulation to Atari800.



#27 UNIXcoffee928 OFFLINE  

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Posted Thu Feb 12, 2015 1:33 PM

I have added Bit3 Emulation to Atari800.

That's great news! Which version, 3.1.0?

 

Can you provide a link to the documentation for the feature?

 

Does it fully support everything in the manual, including changing the contents of the font EPROM?

 

Can it open a secondary virtual 80 column screen? (You can have a 40 column and an 80 Column running simultaneously, with the hardware, as an configuration option, with two physical screens, where the 80 column card displays different information than the 40 column screen.).

 

 

Thanks!


Edited by UNIXcoffee928, Thu Feb 12, 2015 1:34 PM.


#28 perry_m OFFLINE  

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Posted Thu Feb 12, 2015 2:15 PM

It's in CVS.

Only one screen can be shown at once. It does support software switching and manual switching (you can use alt-shift-x to switch.) The font rom is loaded from software so it could be modified. What is described in the manual seems to work.  I do not have much to test it with.  The bit3.com dos xl program worked.

 



#29 Stephen OFFLINE  

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Posted Sat Oct 14, 2017 8:32 PM

After some long procrastination, here are the ROM Dumps and some pics:

 

attachicon.gifBit3Char.ROM

attachicon.gifBit3Code.ROM

ROMs are 2732's

 

attachicon.gifP2060029.JPG

attachicon.gifP2060055.JPG

 

More to follow...

Interesting.  I now own board with serial 312437.



#30 peteym5 OFFLINE  

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Posted Fri Jan 4, 2019 8:10 AM

Any screen shots of what the display looks like? 



#31 Curt Vendel OFFLINE  

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Posted Tue Feb 19, 2019 4:28 PM

The 9007 was used in the MIO 80 column card.

 

Bob

Also on the Austin Franklin 80 board



#32 Curt Vendel OFFLINE  

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Posted Tue Feb 19, 2019 4:30 PM

That's a nice 8021 based design, for sure. It is definitely a simpler design to manage on a card that size, than, say, a 6845 based design.

Why both the 8021 and the 6545... the 6545 should be able to work on its own without the 8021, its just an attributes chip, so is it just producing the blinking cursor and maybe inversed video?  Just curious.



#33 slx OFFLINE  

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Posted Wed Feb 20, 2019 12:16 AM

Interesting.  I now own board with serial 312437.

Wonder if they started with 310000, otherwise one would expect to find some of the other 312436 in practically any old 800. ;)

It's not a prime either, briefly thought they might have used primes as serials to arrive at such high numbers.

#34 Curt Vendel OFFLINE  

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Posted Wed Feb 20, 2019 11:03 AM

Wonder if they started with 310000, otherwise one would expect to find some of the other 312436 in practically any old 800. ;)

It's not a prime either, briefly thought they might have used primes as serials to arrive at such high numbers.

I would definitely agree.     I could believe their were perhaps 2500 of these made, certainly not 31,000 on top of that.



#35 David_P OFFLINE  

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Posted Wed Feb 20, 2019 3:32 PM

Or it's unit #436 of version 3.12...



#36 AtariGeezer ONLINE  

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Posted Fri Mar 15, 2019 8:30 PM

eBay Auction -- Item Number: 132990645168

 

Looks to be missing the video cable, but seller claims to be tested?



#37 slx OFFLINE  

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Posted Sat Mar 16, 2019 12:01 AM

eBay Auction -- Item Number: 132990645168
 
Looks to be missing the video cable, but seller claims to be tested?

Would have dared to try for 100 bucks...


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#38 AtariGeezer ONLINE  

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Posted Sat Mar 16, 2019 10:55 AM

Yep, me too :)  It sold in less than an hour after I saw it posted...



#39 DrVenkman OFFLINE  

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Posted Sat Mar 16, 2019 3:12 PM

I was about a 1/4 of a beer from hitting the But It Now button - I've got an 800 that already has a 32K board in one of the slots, leaving the third slot free.


  • slx likes this

#40 Kyle22 OFFLINE  

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Posted Sun Mar 17, 2019 7:53 AM

Shit!






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