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Clean up text wrap.

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Dennis Boone
2020-04-09 00:02:26 -04:00
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README.md
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@@ -2,21 +2,20 @@
## What Is This?
This is a software emulator for a minicomputer architecture sold
by Prime Computer from the early 70s through about 1993. Prime's
initial business plan was to make systems compatible with the
Honeywell x16 family, which had then-recently been discontinued.
Prime extended the architecture heavily.
This is a software emulator for a minicomputer architecture sold by
Prime Computer from the early 70s through about 1993. Prime's initial
business plan was to make systems compatible with the Honeywell x16
family, which had then-recently been discontinued. Prime extended
the architecture heavily.
## Emulator History
Beginning in 2005, Jim Wilcoxson developed an emulator for Prime
Computer's 50-Series architecture. The emulator originally ran on
the PowerPC architecture. In late 2011, Jim ported it so it would
run on x86. This entailed solving endianness issues (The 50-Series
is big-endian), as well as re-optimizing the code for performance
without the host processor having a large set of general-purpose
registers.
run on x86. This entailed solving endianness issues (The 50-Series is
big-endian), as well as re-optimizing the code for performance without
the host processor having a large set of general-purpose registers.
## Emulator Documentation
@@ -25,8 +24,8 @@ repository.
## Public Systems
There are a set of emulators available for public use. These may
be accessed via `telnet` to the appropriate port on `em.prirun.com`.
There are a set of emulators available for public use. These may be
accessed via `telnet` to the appropriate port on `em.prirun.com`.
| PRIMOS Revision | Port |
|-----------------|------|
@@ -42,28 +41,26 @@ For example, `telnet em.prirun.com 8001`.
## Prime History
Some information about the Prime company is available in the
FAQ which was assembled by denizens of the comp.sys.prime
usenet group and Info-Prime mailing list around the time
Prime's 50-Series business unit ceased to exist. A
reformatted copy is available
Some information about the Prime company is available in the FAQ
which was assembled by denizens of the comp.sys.prime usenet group
and Info-Prime mailing list around the time Prime's 50-Series
business unit ceased to exist. A reformatted copy is available
[here](https://sysovl.info/reference_prime_faq.html).
## Prime Documentation
A growing collection of Prime and related documentation is
available at
[sysovl.info](https://sysovl.info/reference_prime.html).
A growing collection of Prime and related documentation is available
at [sysovl.info](https://sysovl.info/reference_prime.html).
A howto on installing PRIMOS in the emulator is
[here](https://sysovl.info/reference_prime_drb_installing_primos.html).
Discussion of adapting these instructions to 22.1.4 has been
occurring on the
[cctalk mailing list](http://classiccmp.org/pipermail/cctalk/2020-March/052126.html).
Discussion of adapting these instructions to
22.1.4 has been occurring on the [cctalk mailing
list](http://classiccmp.org/pipermail/cctalk/2020-March/052126.html).
## Getting PRIMOS
Distribution tape sets for four versions of PRIMOS, with
small sets of layered products, are available from
Distribution tape sets for four versions of PRIMOS,
with small sets of layered products, are available from
[sysovl.info](https://sysovl.info/downloads_prime_primedist.html):
* Rev 21.0.6, including BASIC, FTN, BRMS, INFORMATION
@@ -71,7 +68,8 @@ small sets of layered products, are available from
* Rev 23.4.Y2K,R1, including BASIC, FTN, MIDASPLUS, DRB, DTB, FS_RECOVER, PL1_LIBRARY
* Rev 24.0.0.r15, including BASIC, FTN, MIDASPLUS, DRB, DTB, FS_RECOVER, PL1_LIBRARY
Two versions of PRIMOS are available from Bitsavers:
Two versions of PRIMOS which are not clean distribution tape sets
are available from Bitsavers:
* [Rev 22.1.4](http://bitsavers.org/bits/Prime/primos_22.1.4.zip) [has issues]
* [Rev 22.1.4 repacked](https://yagi.h-net.org/m2214repack.tar.gz) [use this]
@@ -82,15 +80,14 @@ The Rev. 19 tape is a save from an installed system.
## Sample System Images
A set of sample system images derived from the public emulators can
be downloaded to get you started. These tarballs preserve
sparse allocation ("holes"), so that uninitialized space in the disk
images does not occupy actual space. You may need to tell `tar` to
preserve this sparse allocation when you extract, e.g. with the `-S`
option.
be downloaded to get you started. These tarballs preserve sparse
allocation ("holes"), so that uninitialized space in the disk images
does not occupy actual space. You may need to tell `tar` to preserve
this sparse allocation when you extract, e.g. with the `-S` option.
The current
[tarball](https://sysovl.info/pages/blobs/emulator/p50em_samplemachines_v5.tar)
is 150029183 bytes, and its sha256sum is
is 150029183 bytes, and its sha256sum is
f5b8008d7c53171f50ad95dd5cc537ba48ca419049518f8ea28deee009c6541a.
(gzip compression would only reduce this by ~400 kilobytes.)
@@ -99,7 +96,7 @@ to that image.
V4 corrected ACL problems in the Rev19 and Rev24 images.
V3 removed additional junk, and rebuilt the disk images as 600 MB
drives, split 30/10 heads filesystem/paging. It also included enhancements
to the wrapper scripts: directory independence and the ability to run the
`runem` script from a terminal.
V3 removed additional junk, and rebuilt the disk images as 600
MB drives, split 30/10 heads filesystem/paging. It also included
enhancements to the wrapper scripts: directory independence and the
ability to run the `runem` script from a terminal.