Am Montag, 12. Februar 2024, 16:38:02 CET schrieb A. Fachat: > Am 12.02.24 um 16:34 schrieb Gerrit Heitsch: > > On 2/12/24 15:27, A. Fachat wrote: > >> Am 12.02.24 um 11:25 schrieb didier derny: > >>> Frankly I don't know why it's a bug or not > >>> The essential is that finally they made a great processor that powered > >>> our machines... > >>> > >>> I am more concerned by the w65c51 and the w65c816 still sold knowing > >>> that the w65c51 is unusable and the w65c816 crippled by bugs In > >>> emulation mode > >> > >> I know the 6551 has ... problems ... > > > > With the 6551 it depends on the version... The NMOS 6551 has a problem > > with /CTS turning off the transmitter immediately, even if that's in > > the middle of a byte being sent. It's documented in the data sheet. > > > > On the w65C51 the transmitter empty bit doesn't work. > > > > I think the old 65C51 did work properly, but was a bit limited with > > the baud rates. > > > > I'd try to hook up a 16550 to a 6502 if I needed a UART for a new design. > > The 16550 is my default actually for many years now. Same here. No idea why people bother with things like Swithlink these days. -- http://hitmen.eu http://ar.pokefinder.org http://vice-emu.sourceforge.net http://magicdisk.untergrund.net Don't force it --- get a bigger hammer.Received on 2024-02-12 17:00:19
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