I don't have a REX in my M102, but I have been using the BCR to do "pantry" and "wine cellar" inventory. Both are in the basement, so are not readily accessible when one wants to know what is down there. I am not using the Radio Shack wand, but instead am using a UniTech MS120-NTCB00-SG "industrial strength" wand. It is "plug-in" compatible with the RS wand, and has a sapphire tip that doesn't abrade the barcode labels and keeps dust out of the wand. It also has better "dynamic range" so has no problems reading low contrast barcodes or ines in color. I am using the sample "Simple Inventory" program (with some modifications) that came with the RS Barcode Reader package. I read the "database" file into Excel and keep a printout in the kitchen. The program works well, and barcode reads are quite reliable once you get used to the swiping speed needed.
As to your program conflicts, problem with many of the early computers with "operating systems" supplied by Microsoft, is the RAM driver concept is limited in practical use. Microsoft intended the RAM driver facility to patch a ROM driver that may have bugs or add additional planned system expansion (like the DVI, Bar Code Reader, TDD, Option ROM, etc.). Later third party developers who had a product that used their own RAM driver all seemed to locate them in the same address in memory (top of available RAM, the logical place to put it). This creates memory conflicts. Especially in computers using the Intel 8080/8085 processors that do not support "relative" addressing. Without relative addressing, the user cannot move a driver to a different starting address in memory without recompiling it first, and since the user does not get a copy of the source code, he is usually out of luck. There were a few attempts using programs that would read the code of the driver and attempt to find all of the JMP and CALL instructions and patch them directly to a new base starting address, but it was not always successful, as often times the driver would contain inline data bytes that would confuse the conversion program. These programs usually worked on computers using the Z80 processors, since it did support relative addressing. Regards, Peter ------------------------ <snip> Message: 14 Date: Fri, 2 Mar 2018 00:57:07 -0500 From: Anthony Coghlan <coghl...@gmail.com> To: "m...@bitchin100.com" <m...@bitchin100.com> Subject: Re: [M100] Bar code reader with REX Message-ID: <canesrqv93k+ksufjam+a-lgikozpwwdubcgget4u-uk2ogz...@mail.gmail.com> Content-Type: text/plain; charset="utf-8" Yes, that was the drive belt I used also if I recall, made by Russell Industries. I can?t find my old purchase info from eBay, but it was about $9 at the time. (I think Brian mentioned that price as well.) It was so nice to see the drive come to life! Best wishes, Anthony All on the list: any tips on reliably using the bar code reader? Thanks. I?m threatening to inventory our pantry if I can get it working, though my wife doesn?t think that?s such a practical application... :) <snip>