IBM (PS/2 Model 70 T1 chipset)
(any brand) Discrete Logic
IBM 15F7917
IBM 72X8299 (I/O controller)
IBM 90X8134 (DMA)
Intel 8042AH (Keyboard Controller)
VLSI VL82C114 (Combination I/O)
1987-04-02
Description:
Overview
Found on the model 70 Type 1 motherboard. It supports 16 or 20MHz operation. It is similar to the Model 80 T1-T2 chipset. It differs in that the 80 uses the 72X7377 DMA and this uses the 90X8134 DMA. This chipset appears to use discrete logic and two Intel 8259-2 (Programmable Interrupt Controllers), in order to interface the the 386 CPU. This logic has not been investigated further.
Documented parts
Last updated 2019-04-30T00:00:00Z
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