[net.micro.cpm] Christensen MODEM program for Commodore-64

W8SDZ@Simtel20.ARPA (08/29/84)

From:  Keith Petersen <W8SDZ@Simtel20.ARPA>

Commodore-64 owners who need a program to do file transfers to/from
CP/M systems (and others using the Christensen MODEM/XMODEM/MODEM7
protocol) will be interested in XMODEM64.BAS which is now available
from SIMTEL20.  I don't have a C64 but as near as I can determine, the
program is written to run on Commodore Basic and does not require the
CP/M cartridge.

Filename			Type	 Bytes	 Sectors     CRC

Directory MICRO:<CPM.COMMODORE>
XMODEM64.BAS.1			ASCII	  5234   41 =  29H  50D0H

--Keith

prindle@Nadc.ARPA (08/30/84)

Unfortunately, Commodore BASIC programs, of which this one is no
exception, utilize control characters, both normal ascii ones and ones
with the high order bit set (ie. chr$(x) where x>127), and are thus
not amenable to storage and transfer as normal ascii files.  All of
the cursor positioning characters and reverse field characters are
missing from MICRO:<CPM.COMMODORE>XMODEM64.BAS.  Commodore BASIC
programs must be treated (especially by XMODEM programs themselves) as
"binary", not text, and are best transmitted as hex files.  Of course,
it is possible to write a C64 program which uses only the normal ascii
subset, but I haven't seen one (nontrivial) yet!

kfl@hoxna.UUCP (Kenton Lee) (08/31/84)

xxx
Does anyone know of a similar modem program exists for the Apple II
under the P-system?  I am looking for such a beast, either public
domain or for purchase.  Thanks in advance.
-- 
Kenton Lee, Bell Labs - WB
wb3g!kfl or hoxna!kfl