Dennis_Grant@CMR001.BITNET (10/17/90)
I've been doing a lot of Amiga -> BridgeBoard file transfers lately,
and I came up with an Idea.
How hard would it be to write a BridgeBoard.device that would allow
something like:
Copy myfile to BB:A/MYFILE
or, (in a requester, say from Professional Page)
Print file to: BB:A/DOCUMENT.PST
Sure would speed things up...
----------------------------------------------------------------------
| Dennis Grant DETUD595@CMR001.BITNET | There ain't no replacement |
| Computer Science (Systems) student | for cubic displacement. |
| at CMR. (The "other" MilCol) | |
|--------------------------------------------------------------------|
| All standard disclaimers apply |
|--------------------------------------------------------------------|peterk@cbmger.UUCP (Peter Kittel GERMANY) (10/18/90)
In article <901017.10051766.033595@CMR.CP6> Dennis_Grant@CMR001.BITNET writes: > I've been doing a lot of Amiga -> BridgeBoard file transfers lately, >and I came up with an Idea. > How hard would it be to write a BridgeBoard.device that would allow >something like: > Copy myfile to BB:A/MYFILE You can't do it from Amiga side because MS-DOS is so stupid. Precisely: Most of the MS-DOS functions are not reentrant. So if you interrupt from Amiga side you risk to catch the PC side in a moment when it must not be interrupted and thus loses or corrupts data. As far as I heard from the developers, the first attempts for AREAD and AWRITE did things from the Amiga side, but they learnt the hard way that this may cause big trouble on the PC side. So they changed to the safe way and invoke these things only from the PC side where they are sure that because of lacking multitasking no other process can come in the way. -- Best regards, Dr. Peter Kittel // E-Mail to \\ Only my personal opinions... Commodore Frankfurt, Germany \X/ {uunet|pyramid|rutgers}!cbmvax!cbmger!peterk
smp@myamiga.UUCP (Steve Palm) (10/19/90)
PKG> for AREAD and AWRITE did things from the Amiga side, but they
PKG> learnt the hard way that this may cause big trouble on the PC side.
I really wish that AREAD (?) would support wildcards. I know that the AWRITE
does, but I would like to have AREAD do it also. My main reason for this is
that I have CrossDos installed, and it would be VERY nice ifI could put an IBM
diskette in DI0: and do an AREAD DI0:* C:\DISK /b or something similar.
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\XX/ MIND |_________________________________________________________ p554mve@mpirbn.mpifr-bonn.mpg.de (Michael van Elst) (10/20/90)
In article <519@cbmger.UUCP> peterk@cbmger.UUCP (Peter Kittel GERMANY) writes: >You can't do it from Amiga side because MS-DOS is so stupid. >Precisely: Most of the MS-DOS functions are not reentrant. So if >you interrupt from Amiga side you risk to catch the PC side in a >moment when it must not be interrupted and thus loses or corrupts >data. As far as I heard from the developers, the first attempts >for AREAD and AWRITE did things from the Amiga side, but they >learnt the hard way that this may cause big trouble on the PC side. >So they changed to the safe way and invoke these things only from >the PC side where they are sure that because of lacking multitasking >no other process can come in the way. I don't see a problem, you can trap the MS-DOS syscall. The trap routine sets a flag if the syscall is busy. Now, when the Amiga side needs a call to MS-DOS it checks if a syscall is running. If there's none, then it can call MS-DOS itself, otherwise it has to queue the request and the trap routine has to poll the queue when the currently running syscall exits. Regards, -- Michael van Elst UUCP: universe!local-cluster!milky-way!sol!earth!uunet!unido!mpirbn!p554mve Internet: p554mve@mpirbn.mpifr-bonn.mpg.de "A potential Snark may lurk in every tree."
aliu@aludra.usc.edu (Alex C. Liu) (10/23/90)
In article <63.271FCC76@myamiga.UUCP> smp@myamiga.UUCP (Steve Palm) writes: > PKG> for AREAD and AWRITE did things from the Amiga side, but they > PKG> learnt the hard way that this may cause big trouble on the PC side. Is it possible to create a virtual drive that the Amiga will be able to access to? Like, I know that you can use the BridgeBoard to create a Virtual Drive in an Amiga Disk and be able to stuff files in there, but the amiga can't access any information in that drive. Is this possible?