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Most machine code programs (games) have an EXEC address which is different to the START address. A typical example is: START ADDRESS = $0C00, END ADDRESS = $7000, EXEC ADDRESS = $4000. The DeltaDOS manual states that the SAVEM command only accepts a START and END address (SAVEM"NAME",START,END). How do you save machine code programs (games) like this to DeltaDOS disk?

Maybe you could save the machine code with SAVEM "",START,END, and then run it with LOADM"":EXEC $4000.

Not ideal, but it may work.

I had already thought about that rather obvious method. But then I thought about having to remember/write down all of the the different EXEC addresses for programs on several floppy disks.

Does the LOADM command update the EXEC vector ($009d:009e)?

If not, then I suppose there isn't much hope for a straightforward solution.

You could artificially make the files execute from their start address, if that would help.

The manual says it'll only start things from the beginning of the binary. Goes so far as to recommend putting a JMP in as the first instruction...

Sarah wrote:Does the LOADM command update the EXEC vector ($009d:009e)?

Yes.

sixxie wrote:The manual says it'll only start things from the beginning of the binary. Goes so far as to recommend putting a JMP in as the first instruction...

The JMP idea would be an acceptable compromise for most programs.