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# System prepended metadata

title: Symphony Labs Wagner Chipset Documentation

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# Symphony Labs Wagner

## Collaborators

Eric Voirin (oerg866), Tiseno100

## Chipset Description

The Symphony Labs Wagner is a VESA Local Bus chipset for 486 CPUs.

It supports L1 WB/WT modes.

## Motherboards

This research was based on the ABit PW4: https://theretroweb.com/motherboards/s/abit-ab-pw4

# I/O Ports

* **A8** Chipset Register Index
* **A9** Chipset Register Data
    * First set A8 to the index, then read A9 to get value, write A9 to set value

* **E1** I/O Delay
    * Not sure about this one, seems to be analog to EB and ED in BIOSes

# Registers

* 01
* 03
* 04
* 05
* 06
* 07
* 08
* 09
* 0F
* 42
* 43
* 44
* 45
* 46
*