IZ does a fairly good job of translating assembly language source programs written in Intel 8080 or TDL 8080 mnemonics into equivalent programs written in Zilog Z80 mnemonics. It even translates the macros in Z80.LIB into single Z80 instructions. Version 4.5 is a relatively minor update over the much more significant 4.4 released just over a year ago but I thought it might be of sufficient interest to other users to justify yet another release. The whole package is here and is not dependent on files from earlier versions. Fixes and features: . Translate RLC to RLCA instead of RLC A . Translate RRC to RRCA instead of RRC A . The colon was being lost when translating LABEL: RET . The colon was being dropped on some labelled Z80 macro invocations, e.g. "pogo: djnz" would become "pogo djnz". (Same problem as the one above.) . An extra, spurious instruction was occasionally being generated in the output file immediately after an INCLUDE or MACLIB directive. . (Conditionally) eliminated extra prompt for operator input before translation commences. This makes it easier to use IZ in batch files. Jon Saxton tesseract@triton.vg