Re: SSv5 + REU + T232?

From: Maciej Witkowiak (
Date: 2002-04-18 18:56:37

  • Next message: Marko Mäkelä: "Re: SSv5 + REU + T232?"
    Nicolas Welte wrote:
    > > are used for other functions. Perhaps it's a feature of the
    > > C-128 MMU?
    > No, it's an extra output on the address decoder chip (LS139 probably) that
    > decodes $d400 (SID) and $d600 (VDC). I think $d500 is not used, because the
    > MMU decodes itself internally, and $d700 can be used for external stuff, if
    $d700 is on U3 (74LS138) pin 12. $d500 is available there on pin 14, but I
    don't think it would work, at least in C128 mode.
    We are committed to reinvent evolutionary e-relationships and integrated
    Mr. Lance Glaser
           Message was sent through the cbm-hackers mailing list

    Archive generated by hypermail 2.1.4.