MS-DOS 1.28
| Version of MS-DOS | |
 | |
| Version | 1.28 |
|---|---|
| Release date | 1982-05 |
| Replaces | |
| MS-DOS 1.27 | |
| Replaced by | |
| MS-DOS 1.29 | |
According to MS-DOS 2.11 source code, MS-DOS 1.28 is an unreleased internal version of MS-DOS. At this stage of development, it is already clear that the next major release of MS-DOS is version MS-DOS 2.00 and it will differ significantly from the previous MS-DOS 1.25 release.
Change log[edit | edit source]
1.28 04/15/82 DOS retructured to use ASSUMEs and PROC labels around system
call entries. Most CS relative references changed to SS
relative with an eye toward putting a portion of the DOS in
ROM. DOS source also broken into header, data and code pieces
04/15/82 GETDMA and GETVECT calls added as 24 and 32. These calls
return the current values.
04/15/82 INDOS flag implemented for interrupt processing along with
call to return flag location (call 29)
04/15/82 Volume ID attribute added
04/17/82 Changed ABORT return to user to a long ret from a long jump to
avoid a CS relative reference.
04/17/82 Put call to STATCHK in dispatcher to catch ^C more often
04/20/82 Added INT int_upooler into loop ^S wait
04/22/82 Dynamic disk I/O buffer allocation and call to manage them
call 49.
04/23/82 Added GETDSKPTDL as call 50, similar to GETFATPT(DL), returns
address of DPB
04/29/82 Mod to WRTDEV to look for ^C or ^S at console input when
writting to console device via file I/O. Added a console
output attribute to devices.
04/30/82 Call to en/dis able ^C check in dispatcher Call 51
04/30/82 Code to allow assignment of func 1-12 to disk files as well
as devices.... pipes, redirection now possible
04/30/82 Expanded GETLIST call to 2.0 standard
05/04/82 Change to INT int_fatal_abort callout int HARDERR. DOS SS
(data segment) stashed in ES, INT int_fatal_abort routines must
preserve ES. This mod so HARDERR can be ROMed.