Hi all. To those have put more in contact with BIOS and MSX-BASIC in MSX's ROMs how much old 8080 code is here?
had M$ Guys took the idea of using z80 instructions to take advantage of z80? What about CP/M?
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MSX BIOS and BASIC is 8080 with some tailoring for Z80. https://retrocomputing.stackexchange.com/a/6283/8258
Note that you MUST preserve routine entry addresses as many applications are calling them directly, thus space saving will be questionable.
