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??? Can't figure out how GIGATRON produces text, on its VGA output ???
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Topic: ??? Can't figure out how GIGATRON produces text, on its VGA output ??? (Read 650 times)
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RJSV
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??? Can't figure out how GIGATRON produces text, on its VGA output ???
«
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July 11, 2021, 04:15:03 pm »
How does Gigatron display text, while doing text entry with Tiny Basic
The connected Arduino supplies a PS2 keyboard connection, and puts out ASCII characters, (I suppose).
So each byte has an ASCII code, but somewhere there has to be a character generator, producing like a 9 by 7 cell for display (VGA), on the GIGATRONIC PC board, right ?
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RJSV
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Re: ??? Can't figure out how GIGATRON produces text, on its VGA output ???
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July 11, 2021, 04:20:53 pm »
...OR, is the TINY BASIC entered, line by line, by way of a lap-top, conventionally, first, then downloaded into the GIGATRON hardware.
Missed that, watching the various YouTube coverage.
Thanks
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ataradov
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Re: ??? Can't figure out how GIGATRON produces text, on its VGA output ???
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Reply #2 on:
July 11, 2021, 04:36:51 pm »
The basic interpreter is located in the ROM along with the font. You enter the program that is stored in the RAM and is executed from the RAM.
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Alex
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