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TI(ny)-99/4A Computer


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#126 RXB OFFLINE  

RXB

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Posted Sat Aug 4, 2018 9:38 AM

Personally I would dump TI Basic for the simple reason instead to increase the extra 16K GROM to be 24K of OS in GPL and 8K ROM.

i.e. GROM 0 (current OS), GROM 1 (currently TI BASIC), and GROM 2 (currently TI BASIC) also of course ROM 0 (Assembly OS)

 

RXB can run 99% of TI Basic programs especially if you put my REA TI Basic support routines there at that GROM space (4K used),

the computer does not know the difference between a CALL LINK called by TI Basic or XB, how they are handled in Assembly are the 

same. And with 12K of added OS GROM a better memory manager could be created to take advantage of the SAMS memory. Not to

mention a F18 MK2 VDP memory manager also.

 

So your board would be able to be the most advanced TI on a single board.



#127 fabrice montupet OFFLINE  

fabrice montupet

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Posted Sun Aug 5, 2018 3:37 PM

You mean that I should remove TI-Basic and replace it with RXB? It is a pretty good idea, I like RXB very much. Can you tell me the way to do?

 

That's done, I succeed to reintegrate the third expansion slot :)



#128 RXB OFFLINE  

RXB

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Posted Sun Aug 5, 2018 4:57 PM

You mean that I should remove TI-Basic and replace it with RXB? It is a pretty good idea, I like RXB very much. Can you tell me the way to do?

 

That's done, I succeed to reintegrate the third expansion slot :)

No I said I have written Editor Assembly support that goes into where TI Basic Resides taking less than 4K space, and TI Basic currently takes 12K of the 16K space available.

 

This leaves 12K of open spaces when TI Basic is removed.

 

On a side note RXB can run 99% of TI Basic routines, and STANDARD XB CALL LINK will run those same LINKS but no TI Basic as XB does not support characters 144 to 159,

which RXB does.

 

Just socket TI Basic chips so can be replaced, in the future. (After RXB 2018 I am working on a upgrade to TI GPL OS)



#129 fabrice montupet OFFLINE  

fabrice montupet

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Posted Sun Aug 5, 2018 5:17 PM

Ok,  now I understand better what you said, I"m french and sometimes it can happen to me to have some difficulties to understand exactly some sentences.
All the IC are socketed, so upgrades are made easy.



#130 BeeryMiller OFFLINE  

BeeryMiller

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Posted Thu Aug 9, 2018 9:38 AM

Fabrice,

 

Will your TI(ny) Computer be available for purchase?  Or, is it more of just a personal project of your own?

 

Beery



#131 fabrice montupet OFFLINE  

fabrice montupet

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Posted Thu Aug 9, 2018 5:02 PM

At the beginning, it was just a personal project for fun. But, as some of you were interested to get one, I have modified it for TMS9918A support (and not only the TMS9929A), it will be available for purchase.

 






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