John and others - I'm having the same problems as Frank, so will re-open this thread.
My system is a "generic" N8VEM S100 system with Z80 CPU V2 8088 CPU 4mb SRAM Propeller Console I/O Parallel Board SMB V2 MS-DOS Support V2 Serial I/O I've now constructed a ZFDC and adjusted the Data Separator. I'm using a single Teac HF-235 1.44mb 3.5" drive as "A". I can set the drive type, format the disk, and run the sequential R/W tests without errors. When I try to boot MS-DOS or FREE-DOS I get the same error (03DH) as Frank is getting. One thing I've questioning - does the zfdc.hex file on the S100Computer.com site in the ZFDC-SOURCE-FILES-1.ZIP match the ZFDC.Z80 source? When I assemble the ZFDC.Z80 source I get a ZFDC.HEX file that doesn't match (and doesn't work). - Gary On Friday, July 25, 2014 5:54:16 AM UTC-4, Frank Schieschke wrote: > > I have no luck with the floppy utilities from the "X" PC-BIOS (8086 > Monitor 10.32). > From the ZFDCDIAG program all is working fine and i can read the real data > from the 3,5" MS-DOS floppy. > All other functions like seeking, formatting and R/W tests are all work > fine. > But every access to the ZFDC controller from within the PC-BIOS shows only > like this: > > *Booting MS-DOS from 5" Floppy Disk* > *Initilizing 8259A PIC (Port 20H, Ints 0 & 1 only)* > *ZFDC Board Initilize OK* > > *Floppy Sector Read Error. Error returned = 3DH* > > *Boot sector read on floppy drive failed. * > > This 3DH error appears from all floppy related functions. > > My configuration at the moment: > Z80 CPU V2 with V5.02 monitor. 6MHz > 80286 Master Slave CPU card. 6mhz > V2 MS-DOS Support board with V10.32 monitor in EEPROMs. > 4mb SRAM board, 1MB populated > System Monitor Board V2 > ZFDC Floppy controller > CompuPro Interfacer1 I/O board wired as an Prop I/O board. > Dual IDE Board with CP/M 3.0 - "Yoda" CPM 3 image incl. Z-rtc.com > > Frank > > > > -- 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.
