I understand your frustration, because all I really wanted to do was
read/write RX33 and RX50 5-1/4" floppies to move data in and out of my
microPDP11. Once, I wanted to write an RX23 3-1/2" floppy with OpenVMS
PAK files that could be read on an DEC Alpha.
Finding a PC that supports the
Just an update... I spent an entire long afternoon wrestling with that old
PC, trying to find some combination of HDD jumpers and BIOS settings that
would allow the XP hard drive to boot with another drive attached (either on
the slave connector or the secondary channel with the CD-ROM
JUST DOWN THE ROAD A FEW HOURS FROM US HERE!
ED#
In a message dated 5/11/2019 2:33:48 AM US Mountain Standard Time,
cctalk@classiccmp.org writes:
Great! Good luck with the visit. The other day I wrote to Kristina to express
interest.
> On 11 May 2019, at 04:38, Fritz Mueller via
On 5/11/19 8:22 AM, Douglas Taylor via cctalk wrote:
> Finding a PC that supports the 5-1/4" floppy drive is difficult, the
> BIOS or FDC chips only support 3-1/2" floppies in many late model PC's.
> It appeared only a few of the older PC's that supported the 5-1/4"
> drives could actually
On Sat, 11 May 2019, Chuck Guzis via cctalk wrote:
Add to that, that really good "C" compilers for the x80/x86 took some
time to mature. My first C on an 8086 was Lattice; compiled on a
floppy-based system.
DeSmet was in my price range, . . .
But then Microsoft MASM 1.0 was terrible in its
On 05/11/2019 06:14 PM, Warren Toomey via cctalk wrote:
I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
how were 32-bit minis built in the late 70s and early 80s? In particular,
how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
reading A Soul of
On 05/11/2019 09:30 PM, ben via cctalk wrote:
> On 5/11/2019 6:28 PM, allison via cctalk wrote:
>
>> Not all were 74181 based, Thats an early 1972 part and but 1975 it was
>> already getting old though useful as it evolved to 74S and 74F series.
>> The 82s100 and 105 series were out there and
On 5/11/19 9:52 PM, ben via cctalk wrote:
> On 5/11/2019 10:12 PM, Chuck Guzis via cctalk wrote:
>
>> Personally, I preferred "the Naked Mini"
> Used for porn world wide.:)
>> --Chuck
>
Maybe--it was an 8 bit mini, so not very powerful. Mostly used in what
we'd call "embedded" applications.
On Sat, 11 May 2019, Chuck Guzis via cctalk wrote:
In the case of RX50 on the PC, it doesn't matter. The format is 10
sectors of 512 bytes, which isn't supported by the PC BIOS in any
regular sense (9 sectors is the norm). So most packages that deal with
FILES-11 RX50 floppies on a PC use
On 5/11/19 11:40 AM, Fred Cisin via cctalk wrote:
> On Sat, 11 May 2019, Chuck Guzis via cctalk wrote:
>> In the case of RX50 on the PC, it doesn't matter. The format is 10
>> sectors of 512 bytes, which isn't supported by the PC BIOS in any
>> regular sense (9 sectors is the norm). So most
In the case of RX50 on the PC, it doesn't matter. The format is 10
sectors of 512 bytes, which isn't supported by the PC BIOS in any
regular sense (9 sectors is the norm). So most packages that deal with
FILES-11 RX50 floppies on a PC use direct hardware (chip) access and
bypass the BIOS
Hi Noel,
If you don't get any takers, I'm interested and will happily reimburse
you your entire ebay cost (including shipping to you) as well as
shipping to me.
Thank you!
Todd
On 5/10/2019 2:23 PM, Noel Chiappa via cctalk wrote:
As a result of an inventory error on my part, I wound up
On 5/11/2019 5:14 PM, Warren Toomey via cctalk wrote:
I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
how were 32-bit minis built in the late 70s and early 80s? In particular,
how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
reading A Soul of a
Warren said
> I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
> how were 32-bit minis built in the late 70s and early 80s? In particular,
> how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
> reading A Soul of a New Machine) that PALs were also
Marketing at the time even had a catchy name for the 32-bit minicomputer:
https://en.wikipedia.org/wiki/Superminicomputer
On 5/11/19 8:52 PM, Nigel Williams via cctalk wrote:
> Marketing at the time even had a catchy name for the 32-bit minicomputer:
>
> https://en.wikipedia.org/wiki/Superminicomputer
>
Personally, I preferred "the Naked Mini"
https://www.computerhistory.org/revolution/minicomputers/11/359
On 5/11/2019 9:28 PM, allison via cctalk wrote:
On 05/11/2019 09:30 PM, ben via cctalk wrote:
On 5/11/2019 6:28 PM, allison via cctalk wrote:
Not all were 74181 based, Thats an early 1972 part and but 1975 it was
already getting old though useful as it evolved to 74S and 74F series.
The
On 5/11/2019 10:12 PM, Chuck Guzis via cctalk wrote:
Personally, I preferred "the Naked Mini"
Used for porn world wide.:)
--Chuck
My Solution is easier, least for me.
I have a few Z80 CP/M machines with 765A in it and if it can't read it
its likely due to being hard sectored or M2FM. I has 3.6, 5.25 and 8"
and the 5.25 are Teac FD55gfh which are dual speed and can do all
modes. With my own software and utilities it does
I wish that I were to have met you 40 years ago!
Learning that stuff by error, error, error, trial, and error was
inefficient.
--
Grumpy Ol' Fred ci...@xenosoft.com
On Sat, 11 May 2019, allison via cctech wrote:
My Solution is easier, least for me.
I have a few Z80 CP/M
On 5/11/19 4:14 PM, Warren Toomey via cctalk wrote:
> I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
> how were 32-bit minis built in the late 70s and early 80s? In particular,
> how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
> reading A Soul
> I'm building my own 8-bit CPU from TTL chips, and this caused me to
> think: how were 32-bit minis built in the late 70s and early 80s? In
> particular, how was the ALU built? I know about the 74181 4-bit ALU,
> and I know (from reading A Soul of a New Machine) that PALs were also
> used.
On 05/11/2019 07:14 PM, Warren Toomey via cctalk wrote:
> I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
> how were 32-bit minis built in the late 70s and early 80s? In particular,
> how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
> reading A
I'm building my own 8-bit CPU from TTL chips, and this caused me to think:
how were 32-bit minis built in the late 70s and early 80s? In particular,
how was the ALU built? I know about the 74181 4-bit ALU, and I know (from
reading A Soul of a New Machine) that PALs were also used.
Did companies
On 5/11/19 2:00 PM, Fred Cisin via cctalk wrote:
> Although I enjoyed DeSmet C, I used Microsoft C for all subsequent high
> level language progams that I wrote. For example, I wrote the screen
> capture TSR of "XenoFont" in MASM, and the printing program in Microsoft
> C; I wrote "Sales tax
On Sat, 11 May 2019, Douglas Taylor via cctalk wrote:
Finding a PC that supports the 5-1/4" floppy drive is difficult, the BIOS or
FDC chips only support 3-1/2" floppies in many late model PC's. It appeared
only a few of the older PC's that supported the 5-1/4" drives could actually
change
On Sat, 11 May 2019, ED SHATTNER wrote:
JUST DOWN THE ROAD A FEW HOURS FROM US HERE!
ED#
You should go check it out. Even if there isn't anything that you want,
you might be able to help, or store things for those who can't transport
right away.
There is a section in Bashe et al, Early IBM Computers that suggests Walnut
only went to the CIA.
The follow on project was Cypress beginning in 1962:
“The main Cypress system, designed to store all information in digital form,
was sometimes called the Trillion-bit File. This system was
On Fri, 10 May 2019, Chuck Guzis via cctalk wrote:
Reading about WALNUT, it was more than a little unusual for its time.
The idea was the setup stored (photographically) almost a million images
using a non-silver process. The images were indexed digitally and the
index was searchable. The
On 5/11/2019 6:28 PM, allison via cctalk wrote:
Not all were 74181 based, Thats an early 1972 part and but 1975 it was
already getting old though useful as it evolved to 74S and 74F series.
The 82s100 and 105 series were out there and even by 1980 the AMD 2900C
series was getting long in the
On Sat, May 11, 2019 at 8:50 PM Steve Malikoff via cctalk <
cctalk@classiccmp.org> wrote:
> I could be remembering incorrectly but I think the Gould PN6080 mini we
> had exclusively for third year
> comp sci at Macquarie Uni in the mid/late 80s was 32-bit made up of
> AMD2900 family logic (2901
>-Original Message-
>From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Glen Slick
>via cctech
>Sent: Friday, May 10, 2019 1:34 PM
>To: General Discussion: On-Topic Posts
>Subject: Re: HP 1000 A900 ("Magic") Questions
>
>On Fri, May 10, 2019 at 4:14 AM Paul Birkel via cctech
I have been invited out to the site tomorrow morning to take an inventory of
what’s there (I live near the machines).
I imagine that I may well have a lot of photos that I bring to the list and say
“what is this?”
The owner has assured me the machines will not be sent to the scrapper and that
On 5/10/19 6:42 PM, Adam Thornton via cctech wrote:
I have been invited out to the site tomorrow morning to take an inventory of
what’s there (I live near the machines).
I imagine that I may well have a lot of photos that I bring to the list and say
“what is this?”
Standing by to help out!
Great! Good luck with the visit. The other day I wrote to Kristina to express
interest.
> On 11 May 2019, at 04:38, Fritz Mueller via cctalk
> wrote:
>
>
>> On 5/10/19 6:42 PM, Adam Thornton via cctech wrote:
>> I have been invited out to the site tomorrow morning to take an inventory of
>>
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