Table of Contents
Changes & Errata
Kontron Reset modification
The current SCG design has the reset circuit hardwired for Legacy/N8VEM mode. To convert to Kontron mode apply the following changes:
- Disconnect pin 8 of U12 from C31 of the ECB connector.
- Connect pin 8 of U12 to C26 of the ECB connector.
- The easiest way to do this is the cut the C31 wire on the ECB connector and then link C31 pad to C26 pad.
Version 003 changes
On version SCG-002 and prior, John Coffman identified that the I/O select circuit is qualified only by IORQ# (low). It should be further qualified by M1# (high). The board will erroneously select on an Interrupt Acknowledge (IORQ# low, M1# low). This has been correct in SCG-003.
To update version 002 board:
- Cut track between pin 13 and pin 14 on IC U10.
- Link pin A20 on ECB connector to pin 13 on IC U10.
- If socket on IC U10 prevents cutting the track then lift pin 13 and link the pin to A20.
Version 002 information
Schematic: scg-002_schematic.pdf
Manufacturing Files: :boards:ecb:scg:sgc-002_gerbers.zip
For information on prior board versions, see the Legacy Wiki SCG Folder.