On Tue, Apr 12, 2022 at 3:46 PM Fred Cisin via cctech
wrote:
> >> There's a 2K hole in the Model I memory map above the ROM
> On Tue, 12 Apr 2022, Yeechang Lee via cctech wrote:
> > Is this the hole that causes stock Model I to not run CP/M?
>
> NO.
> The problem with CP/M on TRS80 is that CP/M
Good data, thanks! I kind of like the ESDI disks, they're more solid and
reliable than the MFM ones, and to be honest the RQDX3 was not a super
fast disk controller. I wonder if it could do block mode DMA.
I'll keep an eye out for the Sigma, the only thing I wish I had on the
MTI MQD13 would
I also have multiple ESDI controllers, more than one these flavors:
Dilog DQ686
http://www.bitsavers.org/pdf/dilog/2120-0137-1_DQ686_Nov89.pdf
Emulex QD21
http://www.bitsavers.org/pdf/emulex/QD2151002-J_QD21_Jun90.pdf
Sigma SCD-RQD11-EC (There seems to be multiple versions from different
Once upon a time I used an Emulex QD21, but I sold it because the actual
ESDI disks I had were a pain in the butt. Always crashing.
I still have a Webster (quad board) SRQD something.
I think I had a Dilog board also. It's been a while, probably 20 years.
Doug
On 4/18/2022 9:12 PM, Chris Zach
I don't know if this has been posted already or not so I thought I would
show it here.
https://www.phoronix.com/scan.php?page=news_item=Oracle-Solaris-11.4-CBE
probably others out there that can use some of these cables too... sad
but true I wish I had bought up all the loose IMSAI parts Micro-age
redistribution had way back then in the early 1980s they had parts
and pieces of leftovers and half disassembled IMSAI atuff
