IBM PS/2 Model 70 T1 chipset
Logs See all boards with this chipset See all BIOSes for this chipset
chipChipset parts
(multiple brand) 8042 (Keyboard Controller) (multiple brand) Discrete Logic IBM 15F7917 IBM 72X8299 (I/O controller) IBM 90X8134 (DMA) VLSI VL82C114 (Combination I/O)
dateRelease date
1987-04-02
drv No drivers available
doc No chipset documents available
Chip
Release date
File
Logs
Chip
Release date
1995-11-30
File
Logs
Chip
Release date
1995-11-22
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1994-07
File
Logs
notes Notes

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.

Last updated 2019-04-30T00:00:00Z
image1 Image 1 of 2 (Helen_Croft)
image2 Image 2 of 2 (Motherboard Continuum)

Disclaimer

The info found in this page might not be entirely correct. Check out this guide to learn how you can improve it.