Re: Kaypro 10 and KayPLUS ROM Upgrade

coates.dw@xxxxxxx wrote in
news:1189281771.330734.201190@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:

On Sep 8, 1:05 am, Mitch <mitch_at_microcodeconsultingdotcom> wrote:
On Tue, 04 Sep 2007 04:20:56 -0700, coates...@xxxxxxx wrote:
On Sep 3, 6:08 pm, Tony <nos...@xxxxxxxxxxxxxxxxxxxxxx> wrote:
coates...@xxxxxxx wrote
innews:1188859961.345544.196430@xxxxxxxxxxxxxxxxxxxxxxxxxxx:

I finally had the opportunity to think this through. It would seem
that the hard drive daughter board somes in two flavors, one that
likes the reset HIGH and the other the reset LOW which was partly
known. Unfortunately, it appears that daughter boards were paired
with a ROM and *NOT* the mother board. That means I will need two
different versions each of the KayPLUS83 and KayPLUS84 for reset high
and reset low, with the existing one filling in one of the holes...

I see what I need to do when I find the source code. The problem
will be that any users will be confined to a single floppy as the
second select line is effectively dedicated to the hard drive reset
if I have to reverse polarity. A bit ugly but since Kaypro's only
had one floppy, maybe not a real problem.

Everyone: Don's solution of completely avoiding the use of a software
controlled reset and replaced by using the Z80 reset line is
definitely a better way to go. Moreover, you can then have more
floppy drives if you need them.

And, Don, you probably already figured this out, but if the floppy
drive is not jumpered properly, motor control is dictated by the
select lines and not the motor line itself.

Finally, the ISP and I have got our issues resolved. E-mail should
no longer bounce when sent to legitimate addresses.

-Mitch- Hide quoted text -

- Show quoted text -

Mitch,

Thanks for the effort in getting our "hobby problems" worked out.

My suggestion would be to leave the KayPLUS83 and KayPLUS84 ROM's as
is for the non-K10 users. This will leave them functional. Then do a
special K10 version for both the HIGH and LOW active reset signals.
Since the K10 only has space for a single floppy drive loosing the
second floppy select won't be a problem. The reason I am suggesting
this approach is that I suspect that not everyone in the group is
comfortable using a soldering iron.

I did some major body and fender work on my K10 to add a second floppy
drive. Bypassing the software reset in favor of a system power on
reset had no effect on system operation. The original Kaypro ROM as
well as the TurboROM and the KayPLUS84 ROM's all worked without any
problems.


I don't know about the others, I'm comfortable with a soldering iron, but
I'm not comfortable with hacking up my K10's, to the point that they are no
longer compatible with anything except the KayPLUS ROM.

Wouldn't my K10 longer be compatible with the other ROMs?
That is an unacceptable option, at least for me. The only thing I'd be able
to run, is the 81-188 original K10 ROM, and the KayPlus.

I'm not particularly worried about losing the 2nd floppy on my K10, but if
I wanted to upgrade my K4/84 with the hard disk hardware, it having 2 FD's
already would be lost, correct? I would need to run a "K10 version" on that
puppy.

Bottom line for me, if I have to decide between hacking up my K10's to run
KayPLUS, o rlosing out on some good features by using TurboROM and not
hacking my K10 up, I choose the latter. These things are beginning to get
scarce as it is, and this would only complicate the situation.

Tony

sharkonwheels -at- n0spa|\/|gmail.com
.

Relevant Pages

  • Re: Kaypro 10 and KayPLUS ROM Upgrade
    ... Pin-43 of J9 has the LOW active system reset signal. ... The TurboROM, Kaypro ROM andKayplusROM will ... With the adaptor and Turbo ROM you can add 4 floppy drives to the K10. ...
    (comp.os.cpm)
  • Re: Kaypro 10 and KayPLUS ROM Upgrade
    ... Pin-43 of J9 has the LOW active system reset signal. ... The TurboROM, Kaypro ROM andKayplusROM will ... With the adaptor and Turbo ROM you can add 4 floppy drives to the K10. ...
    (comp.os.cpm)
  • Re: Kaypro 10 and KayPLUS ROM Upgrade
    ... likes the reset HIGH and the other the reset LOW which was partly ... had one floppy, ... floppy drives if you need them. ... special K10 version for both the HIGH and LOW active reset signals. ...
    (comp.os.cpm)
  • Re: Kaypro 10 and KayPLUS ROM Upgrade
    ... Leaving the mod as is renders thr KayPLUS ROM useless. ... Pin-43 of J9 has the LOW active system reset signal. ... With the adaptor and Turbo ROM you can add 4 floppy drives to the K10. ...
    (comp.os.cpm)
  • REstoring XP from a backup after a crash
    ... it was written in the days of floppy & Tape ... XP System Backup. ... hoping to use System Tool Backup to create ASR. ... Supported Floppy drives that XP ASR works with: ...
    (microsoft.public.windowsxp.setup_deployment)