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|    Message 4,007 of 4,255    |
|    rugxulo to James Harris    |
|    Re: PDOS/386 booting on a real 80386SX    |
|    29 Nov 23 21:02:08    |
      From: rugxulo@gmail.com              Hi,              On Wednesday, November 29, 2023 at 3:24:37 AM UTC-6, James Harris wrote:       > On 28/11/2023 09:49, Paul Edwards wrote:        > >        > > That's all I really wanted to know - that PDOS/386        > > has no non-80386 instructions in it. Instead of hoping        > > the emulators are perfectly correct       >       > That's a bit confusing. You tested your code on a 386SX to check it had        > no 386 instructions in it?              I assume he means no 486-ish instructions (BSWAP, XADD, CMPXCHG, CPUID).              > FWIW my CPU detection code does theoretically distinguish between 8086,        > 80186 and 80286 but I've never had a real 186 to test it on.              I think 186 was mostly embedded, though there was a Tandy that Bill Gates       was in an ad for.              * https://www.vintagecomputing.com/index.php/archives/411/retro-       can-of-the-week-bill-gates-celebrity-spokesman              > Instead, I found two emulators, only one of which apparently behaved       > correctly as a 186.               Try this one fork (they fixed a lot of 186 stuff, e.g. ENTER):              * https://github.com/ecm-pushbx/8086tiny              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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