IBM System/23 Datamaster: Difference between revisions
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=== I/O Ports ===
The Datamaster has a rich set of Intel peripherals which consist of a 8251 USART, 8253 PIT, three 8255 PPI, 8257 DMA, 8259 PIC and 8279 CRTC. All of them, including other devices are accessed the following ports<ref name=":0" />:
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