Hi Dave, thats right on a 64 sector border, this may be where my -1 or +1 sector correction may be wrong. regards David Fry On Saturday, June 14, 2014 8:00:09 PM UTC+1, yoda wrote:
> Hi David > > Sounds like a plan. I have made one and when it boots with debug > CPMLDR.COM reads LBA 3F and 40 then stops - that is where I am at. Let > me dig up an image and I will post here for you to look - at - think it is > pretty close > > Dave > > > On Saturday, June 14, 2014 1:48:33 PM UTC-5, David Fry wrote: >> >> Hi Dave, >> >> If we can get the 'No holes' CF card layout to be compliant with cpmtool >> then that has to be the way to go as it will make life much easier. >> As I said in a previous post, I welcome this 'no holes' lba to be picked >> apart to get it right before we go too far down the road and find problems >> later. >> >> I'm a little busy at the moment with various other aspects of my S100 >> system with the little time I have to spend on it,(summer is coming after >> all :-) ) >> If you can knock together a quick image with a CPMLDR.COM and CPM3.SYS >> (doesnt matter what system it's for) then we could take a look to see how >> the layout differs. >> My layout was derived from where CPMLDR was looking to find data. >> >> regards >> >> David Fry >> On Saturday, June 14, 2014 7:30:00 PM UTC+1, yoda wrote: >> >>> why not take a look at the cpmtools set. It has a program called >>> mkfs.cpm that will make a file as a cpm filesystem. You can specify a boot >>> image which it will lay down in the boot sectors. You can then use cpmcp >>> to copy files to the cpm filesystem. Then you can take the file and write >>> it block by block to the CF card. I did this originally to get my system >>> up and running. I actually used dd (a utility on linux or Mac) to write it >>> to the CF. I actually wrote a little script to take the file image and add >>> the "holes" back in so it would work with your BIOS. I went back and tried >>> it with the no hole version and had some difficulties that I have not >>> straightened out yet. I don't know if I did something wrong or David Fry's >>> LBA routine is not doing what I thought it did. I have not gone back and >>> investigated yet but with David's help we can probably probably get this >>> resolved. The procedure would go like this: >>> >>> 1) mkfs.cpm -f s100ide -b dummy.file -b CPMLDR.COM s100.dsk >>> >>> where s100ide is an entry in diskdefs that specifies the geometry of the >>> drive >>> dummy.file is a 512 byte empty file to get CPMLDR.COM to be in the >>> correct sector start. >>> s100.dsk is the file that represent the disk image. >>> >>> 2) cpmcp -f s100ide s100.dsk CPM3.SYS 0: >>> cpmcp -f s100ide s100.dsk <cpm file> 0: copies <cpm file> to >>> user area 0 on disk image >>> continue until you have all the files you want on the disk >>> >>> 3) use a disk image write tool (dd on Linux or Mac) to write s100.dsk to >>> CF card >>> >>> Here is a link to the cpmtools: http://www.moria.de/~michael/cpmtools/ >>> These tools run on Windoze for those that use that OS and easily compiled >>> for Mac or Linux. >>> >>> This is the way I am building my images for CP/M 68K that I am currently >>> working on. >>> >>> I think getting the diskdefs set write and a good writeLBA routine and >>> we should be able to get the procedure down. >>> >>> Dave >>> >>> On Saturday, June 14, 2014 11:31:49 AM UTC-5, monahanz wrote: >>>> >>>> Guys, it’s great to see all the progress and uptake this simple >>>> little IDE board has generated. Thomas in particular congratulations >>>> on putting so much time and effort into “hammering into shape” the process >>>> for first time installs. It helps tremendously but I think it will >>>> still be difficult for some people to do. We all should remember how >>>> it was when we first started! >>>> >>>> >>>> >>>> I’m wondering if somebody out there could spend the time writing a >>>> PC/MSDOS based program to setup a CF card for first time users. If we >>>> agree the IDE board ports start at 30H, the only variable would be the >>>> console I/O. This could be either spliced into the final disk image >>>> with the above program (leaving room in the base code with NOP’s) or by >>>> answering a Q&A session and inserting code like the old XMODEM programs >>>> did. >>>> A CF card is laid down as Dave describes and is checked out. Once the >>>> image is laid down it can be dumped sector for sector any CF card (no >>>> holes of course). The image can even include a few CPM programs. >>>> Probably >>>> best to start with a non-banked CPM3 image. This program would run on >>>> a standard PC, format the CF card and write the image sector by sector. >>>> Not sure if Windows 7,8 allows you to do that easily but there must be >>>> a way. >>>> >>>> >>>> >>>> This would allow anybody not as sophisticated as some of us, to get >>>> going right away and allow them to write more elaborate CPM3.SYS files >>>> that >>>> include a FDC, printer etc. in the BIOS for their own hardware. >>>> >>>> I think something like this would be a tremendous asset for first time >>>> S100 users. >>>> >>>> >>>> >>>> Any volunteers? >>>> >>>> John >>>> >>>> >>>> >>>> >>>> >>> -- 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.
