>From what I remember, it just tries to boot whatever is the first file on the disk. If this is SAM Dos then fine, if not then it fails.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Aley Keprt Sent: 13 January 2005 01:32 To: sam-users@nvg.ntnu.no Subject: How ROM knowns wheter a disk is "bootable" I have a little technical question: How does Sam ROM know whether the file no.01 is DOS, or not? It doesn't blindly load anything there, is it? Does "bootable" disk have some special contents in track 0, sector 1? Or possibly the special contents are at track 4, sector 1? (I'd expect there is something at track 0, sector 1, but I'm not sure what exactly. Please tell me.) ---------------------------------------------------------- Mgr.(MSc.) Ales Keprt (also known as Aley) [EMAIL PROTECTED] *** www.keprt.cz *** ICQ: 82357182 Dept. of Computer Science, VSB Technical University Ostrava, CZ - [EMAIL PROTECTED] - www.cs.vsb.cz ---------------------------------------------------------- ----- Original Message ----- From: "Simon Owen" <[EMAIL PROTECTED]> To: <sam-users@nvg.ntnu.no> Sent: Thursday, January 13, 2005 12:30 AM Subject: RE: Let's discuss ZX Spectrum games > Edwin Blink wrote: >> Hey I've got Lerm assembler on take ! I'm sure there where >> some things that where on tape > > Shouldn't the archive aim to store software in its original format? Some > titles were released on both disk and tape, so it would make sense to > preserve both disk and tape images, and not just the most convenient > format. > Converting existing disk titles to tape files seems wrong to me, and would > also make them much less convenient for use on real machines. Of course, > I've nothing against new software being written out as tape images if > that's > what the author wants! > > (my e-mail has been down recently, so apologies if I've missed anything > that > has already covered this) > > >> until simcoupe has a 'replacement boot' feature (hint hint !) >> that boots dos from a virtual drive when attemting to boot >> from a nono bootable disk. > > I've implemented a quick test version that does a temporary disk image > switch when attempting to boot from a non-bootable disk. It loads only > DOS > from the switched disk, returning to the original disk for the AUTO* file > search (if required). In the options you just specify the path of the > disk > image or .SBT file containing DOS. Does that fit your requirements? > > It might even be nice if SimCoupe had a built-in DOS image so the option > could be enabled by default, to help out new users... > > Si > > > >
