On Thu, May 25, 2017 at 4:52 AM, Jim Brain <brain@jbrain.com> wrote: > On 5/24/2017 4:30 PM, Mike Naberezny wrote: >> >> On 5/24/17 2:02 PM, Jim Brain wrote: >>> >>> How did you resolve the 6/2 versus 8/0 or 0/8 issue as part of the >>> conversion, or did that issue force the effort to stop? >> >> >> I did get the SoftBox running with the CBM-II machines. I came up with a >> hack for the transceiver issue, which I explained here: >> >> >> https://github.com/mnaberez/softbox/blob/9957d6d85172937fec3eee97fdb46429e4e959cd/cbm/cbm2.asm#L233-L309 >> >> It depends on careful timing to know when the SoftBox is in a certain >> state. This is possible because the SoftBox doesn't use interrupts. I don't >> like this solution but it does allow the unmodified SoftBox to be used with >> the CBM-II machines. It would be better to modify the SoftBox so its >> protocol is compatible with the 75160/75161. I also disassembled the >> SoftBox BIOS so I might make that change at some point. > > Impressive. > > Did you decide on whether to create a reproduction of this unit? It sounds > like a cool thing to utilize, but I assume they are scarce. > if a good schematic (and a dump of the TTL prom) is available, I might like to make such a reproduction (particularly if someone wants to help condensing most of the glue logic into a cpld). Frank IZ8DWF Message was sent through the cbm-hackers mailing listReceived on 2017-05-25 10:00:03
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