COM to HEX Converter

[jjandersoj]

They say the mind is the first thing to go, I forgot what the second thing was.

I forgot how to do this. I want to convert a COM to HEX so I can transmit it over the console.

I know LOAD does the HEX to COM.

Anybody remember how to do this?

JA

 

[ldkraemer]

PIPIO.DOC explains the process.

The receiving computer is initiated with the command:
A>AIP d:filename.ext=INP:
(if you are receiving data via the console, disconnect your CRT
and plug in the communications cable after PIP sends a linefeed
to your terminal).

This method sends 7-bit ASCII data, so you cannot send 8-bit
files or programs without first turning them into HEX files. This
conversion is done by the UNLOAD program from the CP/M Users'
Group, which creates a file named "d:filename.HEX" from a file
named "d:filename.COM". You can change the file type of the file
to be sent (if necessary) by renaming it:
A>REN d:filename.COM=d:filename.ext
A>

When you are ready to create the HEX file, enter the command:
A>UNLOAD d:filename 0100
A>

The sending computer is then activated with the command:
A>AIP OUT:=d:filename.ext,EOF:
(if you are using the console connector to send data, disconnect
your CRT and plug in the communications cable after PIP sends a
linefeed to your terminal).

Once the HEX file has been sent to the other computer, it is
turned into a file of type COM with the command:
A>LOAD d:filename
A>

You can then change its type (if necessary) by renaming it:
A>REN d:filename.ext=d:filename.COM
A>

Larry

Download, Rename to UNLOAD23.ZIP, extract, Move to CP/M and try it.

 

[jjandersoj]

Larry, Perfect. Thank you so much.

 

[norwestrzh]

Hi JA,

If a program, written in C, would help you with this task, I'd be happy to send it to you. It is pretty generic C. I use it on my Linux box to convert .COM to .HEX to download the .HEX to my Z80 SBCs.

Roger

 

[Chuck(G)]

If you want a commercial free version, see here.

This kind of conversion is used quite a bit in MCU work.