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On Fri, Oct 16, 2026 at 12:10 PM Gary Weber <[email protected]> wrote: > > and you know what would make circles look amazing? The full-height > screen of a Tandy 200. > > I really like this idea. I already have the baseline of SARDOS 1.60 for > the T200, and integrating all of the BASIC commands, directory navigation + > CIRCLE(), won't take much. > > Gary > > > > On Fri, Oct 16, 2026 at 9:45 AM Justin Poirier <[email protected]> > wrote: > >> Gary, >> >> This is incredible and begs one big question for me. CIRCLE is a huge >> win, and you know what would make circles look amazing? The full-height >> screen of a Tandy 200. Are there any plans for an update to the 200 ROM? >> >> As for the inner-workings of the CIRCLE command, on the Tandy Color >> Computer Extended BASIC, which added the CIRCLE command, it didn't actually >> draw a circle since calculating all of the sines and cosines would have >> taken way too many cycles. They preloaded an internal table with the >> geometry needed to make a (I think) 22-sided polygon and then just drew 22 >> connected lines. At the resolution of the CoCo, it was plenty circle-ish. >> How did you accomplish it? >> >> Thanks! >> >> --Justin >> >> >> On Fri, 2026-10-16 at 07:54 -0700, Joshua O'Keefe wrote: >> >> On Oct 15, 2026, at 11:45 PM, Gary Weber <[email protected]> wrote: >> >> *TS-DOS 4.20 DOS-ON+* >> >> SARDOS 1.80 >> >> SARDOS 1.80 is also available for the Model 100 and with every one of the >> new DOS-ON keywords. >> >> ...and one more thing. >> >> CIRCLE. >> >> Two ROMs. Two machines. Folders at the Ok prompt. Circles on the screen. >> >> >> Holy cow! Wow! Wow wow! How long have you been cooking this up? It's >> wonderful. >> >> Impressive to say the least. I think I can speak for the entire community >> and our descendants when I say: thank you. >> >> One question, though: how'd you pull it off? >> >> >>
