From Newsgroup: comp.sys.apple2


Hi,

I sold my UDC and thought I could use the UniDisk 3.5"
drive on the II+, but it doesn't work. Is that the only controller
that will work? This sucks, coz someone beat me out of a UDC
on eBay. You know who you are Michael. Oops, sorry. Anyway,
I need a solution to this dilemma. I'll even buy it from you Mike.

Thanks,

Bill @ GarberStreet Enterprises };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa@comcast.net



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From Newsgroup: comp.sys.apple2



Bill Garber wrote:

Hi,

I sold my UDC and thought I could use the UniDisk 3.5"
drive on the II+, but it doesn't work. Is that the only controller
that will work? This sucks, coz someone beat me out of a UDC
on eBay. You know who you are Michael. Oops, sorry. Anyway,
I need a solution to this dilemma. I'll even buy it from you Mike.

Thanks,

Bill @ GarberStreet Enterprises };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa@comcast.net

You can use the 3.5" UniDisk on the II+. What you can't do is
auto-boot off one. To boot off one you need to do something like
going into basic and typing PR#x. I'm currently using a 3.5"
UniDisk on an Integer basic II.


Wayne

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From Newsgroup: comp.sys.apple2

Wayne Stewart schrieb:

You can use the 3.5" UniDisk on the II+. What you can't do is
auto-boot off one. To boot off one you need to do something like
going into basic and typing PR#x. I'm currently using a 3.5"
UniDisk on an Integer basic II.

How did you connect it, if not to an UDC? To a Disk II controller card?

And which capacity do you get? 35 tracks with 16 sectors?


Patrick
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From Newsgroup: comp.sys.apple2

On Mon, 14 Jul 2003 03:42:42 -0400, "Bill Garber"
<willy46pa@comcast.net> wrote:

I sold my UDC and thought I could use the UniDisk 3.5"
drive on the II+, but it doesn't work. Is that the only controller
that will work?

A "Apple 3.5 floppy disk controller card" (aka Liron card) will work.

A Superdrive card *might* work. I seem to recall someone saying it
did on a II plus.

Mark R. Percival - RTC Host - Syndicomm Online Apple II Forum
"Midweek Madness!" Every Wednesday Night : 7:00 PM - 9:00 PM Pacific Time

http://www.syndicomm.com
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From Newsgroup: comp.sys.apple2

In article <lUMQa.2306$r8.884@nwrddc02.gnilink.net>,
"Michael Pender" <mpender@hotmail.com> wrote:

Bill Garber <willy46pa@comcast.net> wrote in message news:4kqdnU9_AeOVF46iXTWJhQ@comcast.com...

"Mark Percival" <markREMOVE@syndicomm.com> wrote in message news:d0t6hvg0tf37450rcl88u9gd6qvpsq3ke7@4ax.com...

On Mon, 14 Jul 2003 03:42:42 -0400, "Bill Garber"
<willy46pa@comcast.net> wrote:

A "Apple 3.5 floppy disk controller card" (aka Liron card) will work.

A Superdrive card *might* work. I seem to recall someone saying it
did on a II plus.

I tried both, and both crash into the monitor on attempt at access.

As a troubleshooting step, it would be helpful to know if the card/drive setup works on the enhanced IIe, but not an unenhanced IIe. The drive card firmware may include 65c02 instructions that are not being recognized by the 6502 in the Apple II+.

- Mike

If that's the case, I can't see any harm (other than to "original"/"collectable" status) in just dropping a 'c02 into it. Then
again, it's possible (not likely, just possible) that the cards might
want to play with mousetext chars or something silly like that...

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From Newsgroup: comp.sys.apple2

"Don Bruder" <dakidd@sonic.net> wrote in message news:CgOQa.1896$dk4.96545@typhoon.sonic.net...

In article <lQNQa.2955$s_3.27@nwrddc03.gnilink.net>,
"Michael Pender" <mpender@hotmail.com> wrote:

I recall seeing some postings on comp.sys.apple2 from around 1990 that stated that the implementation of the RDY line on the 65c02 is

inconsistent

with the 6502 which causes other problems. A better option might be to

drop

in a 65816, which more faithfully recreates the 6502 functionality (in

6502

emulation mode).

Huh... Hadn't heard about that. I've always believed the 'c02 was
supposed to be pin-for-pin replacement for, as well as a functional
superset of, the "plain" '02. Y'learn somethin' new every day! :)

(And no, I'm not being snide)

Michael is right. IIRC the problem is in the hold time on the data bus the
cmos part removes the data too quickly for the data bus latches to work reliably. One of the Apple //e tech notes discusses the problem (In this
case between a 6502 and a 6502A but the same thing applies).

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From Newsgroup: comp.sys.apple2



Michael Pender wrote:

I recall seeing some postings on comp.sys.apple2 from around 1990 that
stated that the implementation of the RDY line on the 65c02 is inconsistent with the 6502 which causes other problems. A better option might be to drop in a 65816, which more faithfully recreates the 6502 functionality (in 6502 emulation mode).

- Mike

65816s are a bit on the scarce side. There are a couple of 65C02s that
do work with the II+ though. The GTE and the Rockwell.

Wayne

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From Newsgroup: comp.sys.apple2



"Michael Pender" <mpender@hotmail.com> wrote in message news:lQNQa.2955$s_3.27@nwrddc03.gnilink.net...

Don Bruder <dakidd@sonic.net> wrote in message news:rlNQa.1882$dk4.95590@typhoon.sonic.net...

If that's the case, I can't see any harm (other than to "original"/"collectable" status) in just dropping a 'c02 into it. Then again, it's possible (not likely, just possible) that the cards might
want to play with mousetext chars or something silly like that...

I recall seeing some postings on comp.sys.apple2 from around 1990 that
stated that the implementation of the RDY line on the 65c02 is

inconsistent

with the 6502 which causes other problems. A better option might be to

drop

in a 65816, which more faithfully recreates the 6502 functionality (in

6502

emulation mode).

Although the '816 is basically pin compatible to the 6502,
they are not signal compatible. And to answer other posts
without opening another new one, YES, the Liron and UniDisk
combo does in fact work in my IIe and IIgs. I haven't tried it on
an unenhanced IIe but I'm sure it will give the same results.
I may need to remove and check the pins on all my roms, as I
haven't done that yet, but will before installing in the case that
I just received today. Oh, and I did change the mechanism in the
UniDisk drive, could that be a problem? I assumed the same mech
would work out of an Apple 3.5 drive. Thank you all. Let me know
if you think of any other troubleshooting techniques.

Bill @ GarberStreet Enterprises };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa@comcast.net



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From Newsgroup: comp.sys.apple2



Wayne Stewart wrote:

Michael Pender wrote:

I recall seeing some postings on comp.sys.apple2 from around 1990 that
stated that the implementation of the RDY line on the 65c02 is
inconsistent
with the 6502 which causes other problems. A better option might be
to drop
in a 65816, which more faithfully recreates the 6502 functionality (in
6502
emulation mode).

- Mike

65816s are a bit on the scarce side. There are a couple of 65C02s that
do work with the II+ though. The GTE and the Rockwell.

Wayne

AAAAAAAAAK, I was thinking 65802. A 65816 won't work in a II+ without an adapter which would effectively turn it into a 65802. 65802s are hard to
find. The Rockwell and GTE 65C02 are fairly easy to come by.

Wayne

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From Newsgroup: comp.sys.apple2

On Tue, 15 Jul 2003, "Bill Garber" <willy46pa@comcast.net> wrote:

"Mark Percival" <markREMOVE@syndicomm.com> wrote in message >news:d0t6hvg0tf37450rcl88u9gd6qvpsq3ke7@4ax.com...

On Mon, 14 Jul 2003 03:42:42 -0400, "Bill Garber"
<willy46pa@comcast.net> wrote:

I sold my UDC and thought I could use the UniDisk 3.5"
drive on the II+, but it doesn't work. Is that the only controller
that will work?

A "Apple 3.5 floppy disk controller card" (aka Liron card) will work.

A Superdrive card *might* work. I seem to recall someone saying it
did on a II plus.

I tried both, and both crash into the monitor on attempt at access.

I know for a fact that a Unidisk 3.5 + Liron card does work on a Apple
][ plus. I've used it this way many times. How much RAM does your ][
plus have and what are you trying to boot?
Mark R. Percival - RTC Host - Syndicomm Online Apple II Forum
"Midweek Madness!" Every Wednesday Night : 7:00 PM - 9:00 PM Pacific Time

http://www.syndicomm.com
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From Newsgroup: comp.sys.apple2



"Mark Percival" <markREMOVE@syndicomm.com> wrote in message news:mvf9hvocbate6i6p9hfkaq7f0cmq30hfa1@4ax.com...

On Tue, 15 Jul 2003, "Bill Garber" <willy46pa@comcast.net> wrote:

"Mark Percival" <markREMOVE@syndicomm.com> wrote in message >news:d0t6hvg0tf37450rcl88u9gd6qvpsq3ke7@4ax.com...

On Mon, 14 Jul 2003 03:42:42 -0400, "Bill Garber"
<willy46pa@comcast.net> wrote:

I sold my UDC and thought I could use the UniDisk 3.5"
drive on the II+, but it doesn't work. Is that the only controller
that will work?

I know for a fact that a Unidisk 3.5 + Liron card does work on a Apple
][ plus. I've used it this way many times. How much RAM does your ][
plus have and what are you trying to boot?

Aw Mark, you're too late. I got the problem licked. I have it in slot 4
and working great. Had a fried memory chip and another questionable
chip on the Language card. It will not work in slot 5 or 7 with the Apple
5.25 controller in slot 6. I think if I switch to Disk IIs, then it might
let
me use it in a higher slot but I am happy with it now. I have yet to find
a 65C02 that works, I've tried NCR and GTE and I think the only Rockwell
I have is in a good working IIc and I'll not jeopardize that to update a
II+.
Oh, and so far I can boot into ProDOS 1.2. I think I have 1.4 somewhere
as well as 1.8 and 1.9, but I know 2.0.3 is not going to without 128k,
80 col, and 65C02. Might as well have a IIe then. ;-)
I do thank you for the post and if I need more info I know I can count
on you. Thanks.

Bill @ GarberStreet Enterprises };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa@comcast.net



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Bill Garber wrote:

Oh, and so far I can boot into ProDOS 1.2. I think I have 1.4 somewhere
as well as 1.8 and 1.9, but I know 2.0.3 is not going to without 128k,
80 col, and 65C02. Might as well have a IIe then. ;-)

You don't need the 80 column card or 128k to use ProDOS 2.0.3. All you
need is 64k and a 65C02

Wayne

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From Newsgroup: comp.sys.apple2

On Tue, 15 Jul 2003, "Bill Garber" <willy46pa@comcast.net> wrote:

Oh, and so far I can boot into ProDOS 1.2. I think I have 1.4 somewhere
as well as 1.8 and 1.9, but I know 2.0.3 is not going to without 128k,
80 col, and 65C02. Might as well have a IIe then. ;-)

Actually all I think is required is the 65C02. The IIe's 128K and 80
columns are optional.

Mark R. Percival - RTC Host - Syndicomm Online Apple II Forum
"Midweek Madness!" Every Wednesday Night : 7:00 PM - 9:00 PM Pacific Time

http://www.syndicomm.com
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From Newsgroup: comp.sys.apple2

Roger Johnstone wrote:

In <8GednYCGI7qaVomiXTWJiQ@comcast.com> Bill Garber wrote:

I have yet to find a 65C02 that works, I've tried NCR and GTE and I
think the only Rockwell I have is in a good working IIc and I'll not >>jeopardize that to update a II+.

Bob Sander-Cederlof's Apple Assembly Lines, available at Scott Alfter's
web site <http://salfter.dyndns.org/aal.shtml>, has an article on
putting a 65C02 in an Apple II+.

This is from the December 1984 issue:

(snip)

I never had much luck with that approach. Just posted another letter
from Assembly Lines (in this thread) with a one-wire fix that did the trick.

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From Newsgroup: comp.sys.apple2

Bill Garber wrote:

Thank you Steve, I am going to give that a shot. I may need to get new 200ns 4116's. I seem to have a mix of 150's and 200's. That can't be good in itself.
Wonder who owned this before I did.

Bill @ GarberStreet Enterprises };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa@comcast.net

From my dabblings with hardware, the 150s should not be a problem. The faster chips just have a shorter set up time than the 200s.

Unless you mean to use all 150s ?

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