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- Version 0.2 of Z33RCP does not incorporate any far-reaching changes. The
- most significant one is a correction to the PORT command to make it work
- properly with the HD64180 chip. I had mistakenly assumed that the 64180 IN
- and OUT instructions worked like the ones on the Z80. They don't. They
- work like the ones on the 8080! The new code uses the "IN R,(C)" and "OUT
- (C),R" instructions. The 'H' command was modified to work with CCP
- implementations that have FCPENV enabled. Previously, the address of the
- FCP was hard-coded into the RCP. I doubt very much that this ever caused a
- problem, but it was not rigorous code before. A minor bug in the 'WHL'
- command was fixed also.
-
- I am going to be away on a trip for a month and wanted to get this out
- before I left. When I get back I hope to produce a proper ZCPR33-calibre
- RCP, with interfaces to the error handler.
-
- Jay Sage
- June 18, 1987
-