Here is what I have so far for symptoms and jumpers on the ZFDC to use a
3.5" drive as 1.44mb:
P79, 5-8
JP13
P78, 1-2, 8-11,12, 15-16
JP5
K15 top 2 pins
K1 2-3
Drive jumpered as D0
Using the following in HFL3.ASM:
; EXTENDED DISK PARAMETER HEADER FOR DRIVE 2: (C:)
DW WRITE$SECTOR ;FD SEC WRITE ROUTINE
DW READ$SECTOR ;FD SEC READ ROUTINE
DW FLOPPY$LOGIN$0 ;FLOPPY DISK "C:" LOGIN PROCEDURE
DW FLOPPY$INIT$0 ;FLOPPY DISK "C:" DRIVE INITIALIZATION
ROUTINE
DB 2 ;RELATIVE DRIVE 2 ON THIS
CONTROLLER
DB CPM144 ;CPM-86 3.5" 1.44 MB Disk, fill
char E5
;HI BIT SET : DRIVE
NEEDS RECALIBRATING
DPH2: DPH CPM14$trans,HD3$dpb,,
;Bytes 0-24 used by
DPH/CPM
DW 512 ;25, 512 Bytes per sector count
DB 2 ;27, Drive Hardware Select
HD3$dpb: dpb 512,36,80,2048,256,1 ;3" Disks (36=18X2, because
1 Track, but both sides)
CPM14$trans: skew 36,1,0 ;3.5" sector skew (36 = 18x2,
1=skew from cpmtools dskdef, sectors start at 0)
Now when I boot the system into CPM I can log into the drive as C and read
a diskette written by DOS as 80 Tracks, 16 sector, etc. BUT, I cannot
format the diskette using ZFDCDIAG as format # 16 and do this. It formats
error free, but when I exit to CPM and type 'C' I get error 14 which is
'Seek to track erro'
Something in the formatting is not correct and I am not sure, but
I 'beleive' it is in the statement *CPM14$trans* where you specify the
skew, etc.
Anyone with any suggestions?
Thanks,
Thomas
On Saturday, October 25, 2014 8:17:54 AM UTC-4, Tom Lafleur wrote:
>
> Tom. You might want to look at the Zeta Z80 board to find this.... Also
> this would make the disk interchangeable with the Zeta board...
>
>
> Also, can you post a list of jumper setting your using, and any cable or
> board issues you have found...
>
> Thanks
>
>
> i~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~i
>
> Tom Lafleur
>
>
> On Oct 25, 2014, at 3:56 AM, Thomas Owen <[email protected]
> <javascript:>> wrote:
>
> Hello Everyone,
>
> System:
> Compupro CPUZ
> Compupro RAM17
> Compupro System Support 1
> Dual IDE CF (as Drive A and B)
> ZFDC (with 5.25 and 3.5" disks as C and D)
>
>
> I am now modifying my BIOS to allow for using a 1.44mb 3.5" diskette on my
> ZFDC. Looking at the Disk Parameter Header in the HFL3.ASM file I have
> referenced the proper Drive Parameter Table (CPM144) but there is one piece
> still missing.
>
> It is what CPM3 refers to as the '*Sector Skew Macro*' for this format
> disk. Here are the two formats that John has included in the original
> files for 8" and 5.25" drives:
>
> SD128$trans: skew 26,6,0 ;8" sector skew (Note first
> sector is 0)
> DD512$trans: skew 16,4,0 ;5" sector skew (16 = 8X2)
>
> I will need something like this:
>
> CPM144$trans: skew 36,???,0 ;3.5" sector skew (36 = 18
> sectors per track X 2 sides, sector count starts with 0)
>
> The part with the ??? is what I need and described here in the CPM System
> manual:
>
> *SKEW Macro*
> The SKEW macro generates a skew table and requires the following
> parameters: the number of physical sectors per track, the skew factor, and
> the first sector number on each track (usually 0 or 1).
>
> The form of the SKEW macro call is label: SKEW ?secs,?skf,?fsc where:
>
> ?secs
> is the number of physical sectors per track;
> ?skf
> is the sector skew factor;
> ?fsc
> is the first sector number on each track.
>
>
> So, what do I need for the sector skew factor?
>
> Thanks,
> Thomas
>
>
>
>
> --
> 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] <javascript:>.
> 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.
