[net.micro.cbm] Problems with MLX

algava@hou2d.UUCP (A.ALGAVA) (03/01/84)

My brother has a Commodore-64 with only a Commodore Datasette.  He has tried
to use the machine language editor MLX as was given in the Dec '83
and Jan '84 issue of Compute.

Two questions re MLX:

     1.Why are the two versions different?  (The Jan '84 version
       is missing lines between lines 150 and 190.)

     2.Although he can load machine language programs and execute them,
       he has trouble saving the programs to tape and recalling them.
       MLX appears to save the file, but after turning off the machine,
       reloading MLX and loading in the file, the values of the machine
       language program have changed. (And as might be expected, the
       program does not run.)

Has anyone else had these problems?  If someone has a working version
of MLX and is willing to copy it on a cassette, please contact me and
I will send a cassette.

Thanx in advance.
Albert Algava
hou2d!algava

daemon@decwrl.UUCP (03/02/84)

From: pogo::lawrence
I had a similar problem when I was debugging MLX.  It turned out that
I was trying to input a program starting at address 32768, saved it and
when I read it back, the data was completely different.  It drove me nuts
until I realized that I had the HES MON64 cartridge plugged in and this
also starts at 32768. Since the 64 can share RAM and ROM at the same
address, write to the RAM, but only read the ROM,  there's the answer.
MLX was properly writing the program and also saving it.  But when I
went back to read it, what I got was what was in the ROM.  Once I unplug-
ged the Cartridge, MLX worked like a champ.

I do have a working version of MLZ, so if you want to send me a cassette,
my address is below.  P.S., that's MLX, not MLZ.

			Jim Lawrence
			3130 Rhapsody Court
			Colorado Springs, Colo  80918

y7124@dalcs.UUCP (J Gerard Olszowiec) (03/02/84)

 
          Although COMPUTE is a fine publication, it is not
     without its typos.  
 
          Two rules I follow when I really want a COMPUTE!
     program are:
 
          1) Wait until a friend types and debugs it. Then
             get a copy.
          2) Wait until COMPUTE! is deluged with hate mail
             and they repair the damage in CAPUTE! three
             months later.