Pages

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Sunday, April 5, 2020

Point 4 Mini Computer, multiple CPUs, Power Supplies and Hard Drives - eBay Find! (April 2020)

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https://drive.google.com/drive/folders/1epSVN8QK_dSuGPwj4cP4gmWRlHbecZlq?usp=sharing
Tuesday, December 11, 2018

MARK 3-CPU, Point 4 Data corporation, rare vintage motherboard, year 1981

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So, we just bought this.  Now, how to do something with it without the rest of the chassis or machine...this will be interesting. ......
Saturday, October 8, 2016

Locating a section within a disk raw dump

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This page is a part of the " Understanding IRIS " collection.   Many thanks to  David Takle , for figuring this out, and sharing t...
Wednesday, September 28, 2016

IRIS with Device 033 and 027, DKP and DZP

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This page is a part of the " Understanding IRIS " collection.   Many thanks to  David Takle , for figuring this out, and sharing t...
Monday, September 26, 2016

Running SimH (Point 4 IRIS) on different Apple MAC Versions

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Received from one of the gurus at SimH: ------------------------------ 1)      Install the Max OS X compiler environment (XCode) from the ...
Sunday, September 25, 2016

The Point 4/System House Partnership - Mini-Micro Systems Ad

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This ad is from the November 1980 issue of Mini-Micro Systems.  It is the only Point 4 advertisement that I've ever seen:
Monday, September 19, 2016

"Sanitizing" a Point 4 IRIS system

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This page is a part of the " Understanding IRIS " collection.   Many thanks to  David Takle , for figuring this out, and sharing t...
Tuesday, July 5, 2016

VT-100 with SimH. Hope for Starwriter?

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This page is a part of the " Understanding IRIS " collection.   Many thanks to  David Takle , for figuring this out, and sharing t...
Sunday, June 12, 2016

Converting LU Disc Drivers for SimH Nova

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This page is a part of the " Understanding IRIS " collection.   Many thanks to  David Takle , for figuring this out, and sharing t...

How the Point 4 IRIS Boots

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This page is a part of the " Understanding IRIS " collection.  Many thanks to  Tom Trebisky , for figuring this out, and sharing t...

Examining The Anatomy of a Logical Unit (LU)

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This page is a part of the " Understanding IRIS " collection.  Many thanks to  David Takle , for figuring this out, and sharing th...

IRIS User Privelages

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This page is a part of the " Understanding IRIS " collection.  Many thanks to  David Takle , for figuring this out, and sharing th...
Thursday, June 2, 2016

LU Index Dissection

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This page is a part of the " Understanding IRIS " collection.  Many thanks to  David Takle , for figuring this out, and sharing th...
Tuesday, May 31, 2016

IRIS Assembly Language (Part 2)

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This page is a part of the " Understanding IRIS " collection.  Many thanks to Tom Trebisky , for figuring this out, and sharing th...
Thursday, May 26, 2016

System 1 Disc Architecture & Driver

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I have been poking around the C-CC system to try and figure out what drive it was on. Looks like all the LU's resided on a single 32MB ...