There were some things I wanted to add/change on the first rev of the card. Got the PCBs back from PCBs fabrication but haven't assembled the cards yet. This change:

• Adds Z80 expansion connector (J5)
• Fixes labeling on the Programming connector (H2)
• Adds control signal labels for SRAM debugging (WR*, RD*, and CS*)
• Adds a pin 1 indicator for the PSoC "Small dot >" (at U4)
• Adds I/O Connector (H4)
• Rotate I2C connector to allow horizontal header to be used
• Might want to use right angle connectors at J4, H2, H3, and H4

Z80 Bus Expansion Connector
The primary feature added is the 40-pin bus expansion connector which brings out the Z80 bus. Here's the connector pinout:
Most of the signals are directly from the Z80.  Some of them are hard driven from the PSoC and would need to be changed to Open Drain outputs with pull-ups if there was an expansion card attached to this connector. I mostly want the connector to aid in debugging. Getting all those little chip clips on the Z80 pins and making them stay is just too hard. It's much easier to push the female pin from the Logic Analyzer onto a header.

H4 I/O Connector
Also added a 6-pin connector for additional I/O (maybe an RS-232 port?). Pxx are PSoC pins.