Roger what you have below has all the hallmarks of the MYIDE sector reading/writing being different to that of your CPM BIOS. I had that, way back. Do you have a floppy in your system. If so boot CPM from that and era A:*.* Then PIP things across. A text file first. See that you can first read it from your floppy based CPM. Then see if you can do so with MYIDE.
Yes I will add “A” & “B” on the Silkscreen. Good suggestion. John From: [email protected] [mailto:[email protected]] Sent: Tuesday, February 10, 2015 9:46 PM To: [email protected] Subject: Re: [N8VEM-S100:6283] An updated (V3) version of our Dual IDE/CF card S100 bus board All the suggestions sound pretty good for the updated IDE/CF card. Would you also consider adding a label on the card silkscreen for the drive ID's? (Along the top edge of the card?) A big "A" and "B"?? It was not obvious (to me, anyway) when I first started working with the card, and I ended up putting a large, paper, sticky label there to identify the two "drives". I also should report that I have still had no luck getting a ver. 2 card to work, and it is not because I'm at the "hi-tech." end of things. I'm running it with a 4 MHz CompuPro CPU, and the serial card. I wrote a CBIOS to try to get it working with CP/M 2.2, and it works ..... sorta'. The CBIOS will permit me to run a "DIR" on the (7, as I remember it) CF drives, but try as I might, I was not able to get a "clean" listing. There are a bunch of blank file names in the displayed directories. When I run DU on those "drives", sure enough there are a few (4, as I remember it) sectors of zeros in with all the "E5"'s. I used DU to "write" "E5" into those sectors, but then when I turn around and read and display them, they are zero! Nothing I have tried has allowed me to write anything in those sectors. They show up (probably at different places?) in all 7 "drives" on the CF. I tried several different 8255's (along with the suggested mods. -- remove SIP, change 7403 to 74LS00, etc. etc.). I did use NSWP to copy files into some of the CF "drives", and they appear to copy correctly in *most* cases, but there were also some strange things happening in some of the directory allocations for the resulting files .... in addition to the "zeros problem." Roger -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "N8VEM-S100" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
