Revision as of 13:46, 20 June 2024 view source Retroand (talk \| contribs) Bureaucrats, Interface administrators, Administrators 666 edits Fixed table ← Older edit		Revision as of 09:39, 21 June 2024 view source Retroand (talk \| contribs) Bureaucrats, Interface administrators, Administrators 666 edits →‎Hardware Description Tag: Visual edit: Switched Newer edit →
Line 130: === Keyboard === The computer presents itself with a pre-Model F keyboard with 83 keys. Internally, it used the very same components than the keyboard of the IBM PC would later. The only difference between them is that the PC uses a serial interface to communicate the peripheral with the computer and the Datamaster has a parallel interface. This change also implies that the code in the 8048 micricontroller both carry is different. For this reason this was also one of the most common causes of not repairable failures. === Expansion ports === The Datamaster has three expansion ports located at the rear of the system. It is important to notice that when the PC was developed most of the pins were left in place and, contrary to the popular belief, one is not the mirrored image of the other. [[File:IBM System 23 expansion port comparison with ISA-8.png\|frame\|center\|alt=IBM Datamaster and PC I/O bus comparison\|IBM Datamaster and PC I/O bus comparison]] === Power Supply Unit ===

IBM System/23 Datamaster: Difference between revisions