🚀 go-pugleaf

> The problem I am having at the moment is that all my modem programs and
> the poorly documented routine in the MSBasic manual are for sending ASCII
> characters.  I need to be able to send arbitrary bytes, consisting of
> whatever arrangement of 1's and 0's I need (i.e. if 10101010 were a JMP, I
> need to download that exactly (along with the normal extra protocol
> overhead which the Mac should add and the receiving Asycnh chip should
> strip off), not the ASCII 1, ASCII 0, ASCII 1, etc. that most programs
> send).
Versaterm and MacTep (vintage mid-1984) will both do what you want.  Kermit
will not.  I haven't used any other terminal emulators, but I imagine about
two thirds of them will work.  Microsoft BASIC should send binary out the
modem port (called device COM1:) if you open it with no parity and eight bits.
See page 42 of the version 2.0 manual, or look up device in the index of
other revisions.  Use PRINT #n, CHR$(BYTE) to send a binary byte.
Use INPUT$(1,#m) to read a binary byte from your 8051 executable file on the
Mac.  How do you get the 8051 code on the Mac?  Do you have a cross-assembler
for the 8051 that runs on the Mac?  (Just curious, you don't have to answer,
but if your cross-assembler is on a machine you access with the Mac via a
terminal emulator, you were able to get some form of binary transmission to
work, but it could have been XMODEM or Kermit, true enough.)