jj@dcs.leeds.ac.uk (J Jackson) (12/21/90)
I know this isn't directly CPM but I have a Multiplexor box based on Z80's
and I'm wanting to program it. The UART's are MK3884N-4 's for which
I have been unable to unearth any data. Can anybody provide a
programming summary ? or other help
cheers
Jim Jackson Email :
School of Computer Studies UK - JANET : jj@uk.ac.leeds.dcs
Leeds University Internet : jj@dcs.leeds.ac.uk
Leeds LS2 9JT
UK Phone : +44 532 335451
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Opinions! What Opinions? I just wield the brush round here.mwilson@crash.cts.com (Marc Wilson) (12/23/90)
In article <1975.9012201809@csunb0.dcs.leeds.ac.uk> jj@dcs.leeds.ac.uk (J Jackson) writes: >I know this isn't directly CPM but I have a Multiplexor box based on Z80's >and I'm wanting to program it. The UART's are MK3884N-4 's for which >I have been unable to unearth any data. Can anybody provide a >programming summary ? or other help It's an SIO. According to Mostek's 1985 data book, the 3884 is the version that has *TxCB and *RxCB bonded together. Any Z80 data book should have what you need. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Marc Wilson ARPA: ...!crash!mwilson@nosc.mil ...!crash!pnet01!pro-sol!mwilson@nosc.mil UUCP: [ cbosgd | hp-sdd!hplabs | sdcsvax | nosc ]!crash!mwilson INET: mwilson@crash.CTS.COM ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Marc Wilson ARPA: ...!crash!mwilson@nosc.mil ...!crash!pnet01!pro-sol!mwilson@nosc.mil UUCP: [ cbosgd | hp-sdd!hplabs | sdcsvax | nosc ]!crash!mwilson INET: mwilson@crash.CTS.COM ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~