On Sun, 14 Dec 2003 07:24:35 GMT, "Bender MX" wrote: > I was trying to 'Bsave' and 'Bload' lo-res / text screens >under Prodos (emulator) tonight ... > >It's a No-Go - what gives? Does Prodos not allow >Bload filename,a1024 ??? Like others have already mentioned, you've run into ProDOS' memory protection system. I wrote an article that was published in the spring 1996 issue of II Alive magazine about this and how to circumvent it. The reason I even researched this was because I was trying to convert some older, single file DOS 3.3 games onto a 3.5" ProDOS floppy and some of them tried to load themselves over the text screen. I found out what caused the "NO BUFFERS AVAILABLE" error and wrote a program launcher in Applesoft that gave me the option to deprotect the text screen before launching a program to avoid it. The program launcher I wrote is called Selector v1.0 and is on the ground FTP site and maybe one or two others as well. The quick and easy way to disable just the text screen under ProDOS is to do a POKE 48984, 192. This leaves all the other areas protected that ProDOS protects by default (those being page $00, $01 and $BF) by modifying ProDOS' memory protect bitmap which is at $BF58 to $BF6F. However, to do it properly you should only modify the bits that you are really concerned about. In this case it is bits 0 to 3 of byte 0 of the bitmap. This can be done easily in assembly using this code: LDA #$BF58 AND #$F0 STA #$BF58 RTS To do it in Applesoft is a little more involved and I won't bother typing it in here unless someone is really interested in seeing the code I hacked together years ago. :-) -- Jeff Blakeney - Dean of the Apple II University in the Apple II Community on Syndicomm.com CUT the obvious from my address if you want to e-mail me