> on dbas manual i've found an alternative description of the header.. > > Type Length Name Contents > 2 - LENGTH File Length > 1 - TYPE File access *256+ file type > 2 - DATA Dataspace size - EXECutable type > 2 - OFFSET GST Linker "OFFSET" value > 0 36 char NAME$ File name > 2 - UPDATE Update date > 1 - VERSION% Version number > 1 - FILE% File number > 2 - BACKUP Backup date (not used) > > I'm more and more confused…. :-(
This is the definite version from the SMSQ/E source code: * file header structure hdr_flen equ $00 ; long File LENgth hdr_accs equ $04 ; byte access control byte hdr_type equ $05 ; byte file TYPE hdrt.exe equ 1 ; executable hdrt.rel equ 2 ; relocatable hdrt.ldr equ 3 ; loader re-locatable file hdrt.pfm equ 7 ; proforma/prowess types hdrt.dir equ $ff ; directory hdr_info equ $06 ; 8*bytes additional information hdr_data equ $06 ; long program DATA space hdr_xtra equ $0a ; long extra info hdr_name equ $0e ; string file name (up to 36 characters long) hdr.nmln equ 36 hdr_date equ $34 ; long update date hdr_vers equ $38 ; word version number hdr_flid equ $3a ; word File ID hdr_bkup equ $3c ; long backup date hdr_end equ $40 ; end of header Contrary to my previous mail hdr_accs is defined by SMSQ/E as the DOS attributes for the file. My DOS device also uses it this way. dos.ro equ $01 ; read only dos.hidf equ $02 ; hidden file dos.sysf equ $04 ; system file dos.vol equ $08 ; volume label dos.subd equ $10 ; subdirectory dos.updt equ $20 ; file is updated I don't think these attributes (like read-only) are actively enforced for QL devices, however. The only known use for hdr_xtra is on SMSQ/E files that can be LRESPRed, in this case it holds the SMSQ/E version (hdr_data is 4 for these files) Marcel _______________________________________________ QL-Users Mailing List
