Sharp MZ

Hello,

I am looking at the contents of .dsk for SFD700 / 800 (+1500) interfaces.

I would like to know 3 things:
- For the SFD-700, is the automatic start of a program detected by $02 + "IPLPRO" ?
- For the SFD-800 (and 1500), is the automatic start of a program detected by $03 + "IPLPRO" ?
- On the catalog sector, the first 32 bytes are reserved :
If I understand correctly the byte [$00]=$80 and [$01]=Disk Identification.
Do the other bytes have a meaning ?

Thank you.

Hi,
the IPLPRO tags are to indicate that a disk is bootable i.e. a system disk.
It contains a short sys-name, size, load , exec address and the start position (logical sector) on the disk.
To stop a machine booting a incorrect system disk each IPLPRO is prefixed with byte.
Sharp used
01 for MZ80B
02 for MZ80A
03 for MZ700
Nice system, but the MZ800 also uses 03 and K&P disks also use 02.
The empty 1st directory entry type 80H is resevred for the SWAP file details.

Hi S.U.C.,

Thank you for the answer.

By SWAP file details, do we mean that the reserved area is used in temporary memory to have the details of a particular file without having to access the declaration area in the catalog itself?