The IBM1130 was a small business and scientific computer that was introduced by IBM in 1965. A typical system had 8K words of 16 bit memory, a single 1MB disk drive, a card read-punch, a line printer, an operator keyboard, and a console Selectric printer. 

Many 1130 users have very fond memories of the system; it had a high performance to cost ratio and was often directly accessible by its users, making the 1130 a sort of prototype for a "personal computer". 

Set up in conjunction with (which has many manuals, a list of known 1130s, and an 1130 emulator that runs with DMS2, FORTRAN, RPG, APL, and LISP), this group provides a place to discuss all aspects of the system -- hardware, software, memories or stories. 

Beyond that, we can also use this group as a coordination point for hobbyist projects or other related activities. 

If you are wondering if any 1130s are alive today, there are a couple. First, see the page on There is one being restored in California by Carl Claunch. See for more information.


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Happy 1130 day! Bob Flanders 6:36 AM
Looking for IDEAL and Commercial Subroutine Package manuals. Eddy Quicksall 11/22/15
Help decoding header cards on system phase decks Carl Claunch 11/14/15
1130 photo on ZDnet ---dcm 11/13/15
Anyone have any documentation or information about the RPQ to use 2415 tape drives with an 1130 system Carl Claunch 11/8/15
IBM 1130 Disk Monitor System Program Logic Manual rbsteup 11/8/15
FW: [Selectric Owners Club] IBM MAG CARD II TYPEWRITER ON EBAY Dave Wade 9/6/15
Some 1800 photos from Finland Johannes Thelen 8/12/15
Core Image program and Supervisor Control Records John McKee 7/10/15
FPGA 1130 John McKee 6/28/15
EMU compiler Eddy Quicksall 6/26/15
Small assembler program Bob Flanders 6/7/15
1130 source to ECAP, Linear Programming System, Complex Variables Subroutine, Craps and other games Carl Claunch 6/4/15
Some thoughts on the real impact of the 1130 rbsteup 6/2/15
Huge IBM 1800 find (need little help) Johannes Thelen 5/1/15
DEFINE FILE table Eddy Quicksall 4/24/15
1130 simulator with TSO/CYTOS Eddy Quicksall 4/19/15
Fun and games with error codes.. Tom Watson 4/9/15
Thoughts in the wee hours of the morning miles 4/4/15
Re: Is Mr. Field wrong for ASKING QUESTIONS? Bob Flanders 4/1/15
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