mos 6551 / w65c51

From: didier_at_aida.org Date: Wed, 18 Oct 2023 14:45:19 +0200 Message-ID: <16f7abfc-d7c5-45ec-8d29-f83ebf0b7e6c_at_aida.org>

Hi All :)

I made a board with a 65c816 and a 65c51
I saw on the web that apparently the w65c51 has bug on the transmit flag ...
is there a way to identify the w65c51 with or without bugs ?
I checked the plus4 rom code to check how the 6551 was programmed

is this bug only on the w65c51 or also on the mos 6551 ?

my goal was to study how to replace a mos 6502 by a 65c816... on a 
commodore 8032
have a board with ram + 64ext on the board and run at 1 Mhz on the I/O
and faster speed while accessing the ram  (8Mhz)

thanks