IBM System/23 Datamaster: Difference between revisions
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Added reference for the I/O bus similarity between the Datamaster and the PC |
Added timing to the Datamaster |
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| Models || 5322, 5324
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| CPU || Intel 8085@6.14MHz
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| DMA || Intel 8257
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== Hardware Description ==
=== Microprocessor and timing ===
The CPU selected to serve as the core of the system was the Intel 8085. However, as the component references were ofuscated identifying the CPU was not a straightforward task. It was hinted that the component with reference 4178015 could be the part. To confirm the true identity of the integrated circuit, an exchange with a legit 8085 was done: the remarked part went into a [[Alphatronic P2|P2]] CPU board and the P2 CPU went in place of the unknown component. The test went successfully and the cross reference was proved as fact.<ref name=":0">Own research</ref>
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For more specific information about the 8085 microprocessor, [[8085|refer to its article page]].
Regarding the system clock, it is derivated from a 18.432MHz square wave oscillator which is then divided by three to feed the microprocessor with a 6.14MHz signal.
=== ROM Operating System ===
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