https://www.ebay.com/itm/144199779039

--- SoupGate-Win32 v1.05
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On Friday, September 17, 2021 at 2:24:30 PM UTC-4, Louis Ohland wrote:

https://www.ebay.com/itm/144199779039

The seller is in Binghamton, "right in my back yard". Their store has some more microchannel stuff, but nothing I would find interesting. I hope the bidders realize just how painfully slow the Crossbow adapter runs, it certainly falls in my "enhanced
uselessness" bucket.

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So which 68K CPU was the 68881 used with? 68020 or 68030?

https://en.wikipedia.org/wiki/Motorola_68881

The Motorola 68881 and Motorola 68882 are floating-point units (FPUs)
used in some computer systems in conjunction with Motorola's 32-bit
68020 or 68030 microprocessors. These coprocessors are external chips,
designed before floating point math became standard on CPUs. The
Motorola 68881 was introduced in 1984.[1] The 68882 is a higher
performance version produced later.

68881
155 000 transistors on-chip
20 MHz version ran at 192 kFLOPS

On 9/18/2021 12:34, Louis Ohland wrote:

Motorola MC68881

--- SoupGate-Win32 v1.05
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Probably Elizabeth-O, and it's from Industrial Dave.

The Crossbow was associated with AOS, I can't recall any mention of it
with another OS.

BUT, you could run two Crossbows with BDSM 4.3 [you would have to love
pain to do it]. For a BSD enthusiast, this would give you the
opportunity to run dual CPUs...

https://ardent-tool.com/615x/6152.html

The IBM 6152 Academic System combines a Model 60 with a 32-bit RISC
processor (similar to the RT PC processor), together with a Motorola
MC68881 floating point processor.

The primary OS for the 6152 is the IBM Academic Operating System 4.3
(IBM/4.3). The IBM/4.3 operating system is derived from the 4.3 Berkeley Software Distribution (4.3 BSD) version of a UNIX operating system. The
X Window System, version 11 is provided as an integral part of IBM/4.3.
The X Window System is a network-transparent windowing system that
provides a base for the operation of application programs. Token-Ring
and Ethernet networks are supported on the 6152.

The 6152 is also supported by the DOS 3.3 and OS/2 Standard 1.0
operating systems. When operating under DOS 3.3 or OS/2 Standard 1.0 the
6152 does not use the RISC processor or RISC RAM storage. Only one
operating system can run at any time. DOS 3.3 and OS/2 Standard 1.0 do
not support the RISC processor or RISC RAM.

On 9/18/2021 11:48, RickE wrote:

On Friday, September 17, 2021 at 2:24:30 PM UTC-4, Louis Ohland wrote:

https://www.ebay.com/itm/144199779039

The seller is in Binghamton, "right in my back yard". Their store has some more microchannel stuff, but nothing I would find interesting. I hope the bidders realize just how painfully slow the Crossbow adapter runs, it certainly falls in my "enhanced

uselessness" bucket.


--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

'ROMP'or 032 processor?

On 9/18/2021 12:49, Louis Ohland wrote:

So which 68K CPU was the 68881 used with? 68020 or 68030?

https://en.wikipedia.org/wiki/Motorola_68881

The Motorola 68881 and Motorola 68882 are floating-point units (FPUs)
used in some computer systems in conjunction with Motorola's 32-bit
68020 or 68030 microprocessors. These coprocessors are external chips, designed before floating point math became standard on CPUs. The
Motorola 68881 was introduced in 1984.[1] The 68882 is a higher
performance version produced later.

68881
155 000 transistors on-chip
20 MHz version ran at 192 kFLOPS

On 9/18/2021 12:34, Louis Ohland wrote:

Motorola MC68881

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

https://ia802905.us.archive.org/24/items/bitsavers_ibmpcrtSA2omputerTechnology1986_13451668/SA23-1057_IBM_RT_Personal_Computer_Technology_1986.pdf
On 9/18/2021 14:05, Louis Ohland wrote:

'ROMP'or 032 processor?

On 9/18/2021 12:49, Louis Ohland wrote:

So which 68K CPU was the 68881 used with? 68020 or 68030?

https://en.wikipedia.org/wiki/Motorola_68881

The Motorola 68881 and Motorola 68882 are floating-point units (FPUs)
used in some computer systems in conjunction with Motorola's 32-bit
68020 or 68030 microprocessors. These coprocessors are external chips,
designed before floating point math became standard on CPUs. The
Motorola 68881 was introduced in 1984.[1] The 68882 is a higher
performance version produced later.

68881
155 000 transistors on-chip
20 MHz version ran at 192 kFLOPS

On 9/18/2021 12:34, Louis Ohland wrote:

Motorola MC68881

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

https://ia803401.us.archive.org/10/items/rt-pc-concepts-brochure-nov85/GC23-0784-00_RT_PC_Concepts_Brochure_Nov85.pdf

On 9/18/2021 14:36, Louis Ohland wrote:

https://ia802807.us.archive.org/30/items/bitsavers_ibmpcrtaix26No4AIX326345_3222525/IBM_System_Journal_Vol_26_No_4_AIX_326-345.pdf

On 9/18/2021 14:11, Louis Ohland wrote:

https://ia802905.us.archive.org/24/items/bitsavers_ibmpcrtSA2omputerTechnology1986_13451668/SA23-1057_IBM_RT_Personal_Computer_Technology_1986.pdf

On 9/18/2021 14:05, Louis Ohland wrote:

'ROMP'or 032 processor?

On 9/18/2021 12:49, Louis Ohland wrote:

So which 68K CPU was the 68881 used with? 68020 or 68030?

https://en.wikipedia.org/wiki/Motorola_68881

The Motorola 68881 and Motorola 68882 are floating-point units
(FPUs) used in some computer systems in conjunction with Motorola's
32-bit 68020 or 68030 microprocessors. These coprocessors are
external chips, designed before floating point math became standard
on CPUs. The Motorola 68881 was introduced in 1984.[1] The 68882 is
a higher performance version produced later.

68881
155 000 transistors on-chip
20 MHz version ran at 192 kFLOPS

On 9/18/2021 12:34, Louis Ohland wrote:

Motorola MC68881

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

https://ia802807.us.archive.org/30/items/bitsavers_ibmpcrtaix26No4AIX326345_3222525/IBM_System_Journal_Vol_26_No_4_AIX_326-345.pdf

On 9/18/2021 14:11, Louis Ohland wrote:

https://ia802905.us.archive.org/24/items/bitsavers_ibmpcrtSA2omputerTechnology1986_13451668/SA23-1057_IBM_RT_Personal_Computer_Technology_1986.pdf

On 9/18/2021 14:05, Louis Ohland wrote:

'ROMP'or 032 processor?

On 9/18/2021 12:49, Louis Ohland wrote:

So which 68K CPU was the 68881 used with? 68020 or 68030?

https://en.wikipedia.org/wiki/Motorola_68881

The Motorola 68881 and Motorola 68882 are floating-point units (FPUs)
used in some computer systems in conjunction with Motorola's 32-bit
68020 or 68030 microprocessors. These coprocessors are external
chips, designed before floating point math became standard on CPUs.
The Motorola 68881 was introduced in 1984.[1] The 68882 is a higher
performance version produced later.

68881
155 000 transistors on-chip
20 MHz version ran at 192 kFLOPS

On 9/18/2021 12:34, Louis Ohland wrote:

Motorola MC68881

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)