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<proteusguy>
Wow my first embedded ASM project was with a V20 board installed in an original IBM PC. I wrote the boot ROM for it. That was 1987 I think.
<f-a>
writing a boot rom, I wouldn’t even know where to start
<f-a>
good morning (TZAG, rather) proteusguy
<proteusguy>
:-)
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<MrMobius>
proteusguy, neat! did you use any of the extensions? the only one I remember is being able to add an arbitrary number of BCD digits which is perfect for a calculator
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<DKordic>
Lulz ""if"" is ""compile-only"" in ANS Forth!!
<DKordic>
Nuff said!!
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<crc>
`if` is compile only in most forths I've used
<MrMobius>
Dkordic manages his own r stack
<MrMobius>
lviing on the edge
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<lisbeths>
how do some forth programmers get away with only having '+' as their arithmetic operator and not having -, *, and /
<f-a>
they do have them
<f-a>
7 3 - . 4 ok
<lisbeths>
well there was an old video of chuck moore talking about colorforth and how he only really uses +, and on the reddit there is a forth called sectorforth which also only has +, and so in sectorforth I gather that they derive subtraction from out of +
<f-a>
I would advise you not to read reddit
<f-a>
but in general, if you have weaved a Forth yourself and you only need +, what can I say, go wild
<lisbeths>
perhaps I should read the inventor of sector forth.
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<MrMobius>
lisbeths, are those forths for the chips that Chuck Moore designed like the F18A?
<MrMobius>
they only have + since you can synthesize it with + and something else like XOR
<MrMobius>
and * and / usually aren't instructions on simpler chips like that
<crc>
sectorforth would only have 510 bytes to work with, so keeping the primitives to a minimum is crucial
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