provide unopened FCBs to launched applications

• Reporter: bttr
• Owner: mateuszviste
• Type: Feature Requests
• Status: Open [Owner assigned]
• Component: svarcom
• MileStone: (None)
• Priority: 5 - Medium
• Severity: 5 - Medium
• Resolution: None
• File: None

Details Reply

(from SVARCOM TODO LIST todo.txt)

Ticket History (3/4 Histories)

2022-04-02 18:48 Updated by: bttr

• New Ticket "provide unopened FCBs to launched applications" created

2022-04-03 01:18 Updated by: bttr

Comment Reply

May I ask why do we (you) want this? What is it for?

2022-04-04 18:52 Updated by: mateuszviste

Comment Reply

this is an arcane compatibility item. When executing a program, DOS (COMMAND.COM) parses the command line and prepares two unopened FCB records in the application's PSP with the filenames mentioned respectively in first and second argument, so the application can use them right away instead of having to perform command line lookups and preparing FCB entries. This is presumably used by some old (DOS 1.x era) programs.

2022-04-07 00:24 Updated by: mateuszviste

Comment Reply

here's a simple test program I devised today (toys/fcbdir.asm):

http://svn.svardos.org/filedetails.php?repname=SvarDOS&path=%2Fsvarcom%2Ftrunk%2Ftoys%2Ffcbdir.asm