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Re: CP/M on //e?
- Subject: Re: CP/M on //e?
- From: ds_spenc@alcor.concordia.ca (Doug Spence)
- Date: 1996/10/17
- Newsgroups: comp.sys.apple2
- Organization: Concordia University, Montreal, Canada
- References: <53aeoe$bsf@newsflash.concordia.ca> <53c2lj$2066@news.gate.net> <53du80$uf6@cisu2.jsc.nasa.gov> <53l3d2$552@newsflash.concordia.ca> <53p43g$2aqk@news.gate.net>
Louis Schulman (louiss@gate.net) wrote:
: The switches work as follows:
: S1: Off allows the Z80 translator to add $1000 to all addresses loaded in
: memory to avoid conflicts with the 6502. This should be left off unless you
: like memory conflicts.
^^^This one looks interesting. Why the heck did they even put a switch
on for this if it's so critical you don't turn it on? :)
: S2: On allows Apple DMA devices to interrupt the Softcard.
: S3: On allows the Z-80 to respond to Apple non-maskable interrupts
: S4: On allows the Z-80 to respond to Apple interrupts.
: The default for all switches is off. They should only be turned on if there
: is a specific reason to do so.
OK, thanks for the info. All the switches were off, and I actually went
through all sixteen possibilites today with no luck. It looks like this
card just doesn't like the //e. :(
Interestingly, switching S3 to "on" seemed to make the red LED on the
card light up with far greater frequency.
: Louis
: P.S. The switch that enables sex and free beer existed in the prototype, but
: was removed prior to production.
Why would they remove the card's main selling point? :)
Doug Spence
DS_SPENC@alcor.concordia.ca