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- STSWITCH V1.0 June 1987
- =======================
-
- Copyright (C) 1987 David T. Jones
-
-
- This software may be distributed freely on the understanding that
- no profit is made from it. A small charge for media and
- duplication may be made as long as this totals no more than the
- equivalent of 4 Pounds Sterling.
-
-
-
- What is STSWITCH?
- =================
-
- STSWITCH is a little program that I wrote for a) A bet and b) A
- laugh! I was talking with someone about switcher programs and
- I foolishly said that I could write a crude switcher for the ST in
- three hours. So the bet was on. In fact it took less than three
- hours to get something up and running but took another few days to
- get the thing vaguely usable. I think I won the bet - but there
- again the other guy thinks he did too!
-
- What STSWITCH does is to cut your ST in half ( it's OK John, turn
- off the chainsaw... ) - well, sort of. It actually divides the
- ST's memory space into two independent sections - each of which
- can act as a normal ST. For example you can have a word-processor
- in one half, and the ST Desktop in the other so that you can
- delete and copy files as usual and still have access to your
- documents. The two sections are very independent - one section can
- suffer a nasty crash whilst the other is still functional, but
- that is quite often not the case. Still even if you can't find a
- real use for it, then you still might have fun playing with it.
-
-
- How to use STSWITCH
- ===================
-
- Firstly, please don't take it too seriously. STSWITCH is not the
- most reliable and user-friendly program in the world, it isn't too
- happy with colour systems and doesn't like many graphics programs!
- If you push it too hard IT WILL BREAK! But, hey, it's free, who
- cares?!
-
- Right, first you need to copy the file SWITCHBT.PRG into the AUTO
- folder of your boot disk. This can either be on a floppy disk or
- on a hard-disk AUTO folder. When SWITCHBT.PRG is executed it will
- ask whether it should split RAM in two. If 'Y' is entered for yes,
- then the system will re-boot ... don't worry about that, it is
- quite intentional. After the forced re-boot SWITCHBT.PRG will not
- bother you again, and the GEM desktop should appear as usual.
-
- After the re-boot your ST now will appear to have half its normal
- memory size - this is a temporary situation! To gain access to the
- hidden half, just double-click the SWITCHER.PRG icon. The program
- will appear to do nothing ... but now the MAGIC KEYS are
- operational. To toggle between the two STs, just press the CONTROL
- key and the TWO SHIFT keys (CONTROL+LEFT_SHIFT+RIGHT_SHIFT)
- together. They must ALL be down to switch. You should now see
- another desktop appear - the mouse possibly in a different screen
- position. That's it - just press down the three magic keys every
- time you want to get to the other memory bank. Oh yes, if you want
- all your RAM back again just press the RESET key after running
- SWITCHER.PRG - or just switch off your ST and turn it back on
- again.
-
-
- Limitations
- ===========
-
- STSWITCH works well on monochrome systems, but not quite so well
- at present with colour. I'm not sure why, but it doesn't always
- restore the palette settings properly. It is really only meant to
- switch well-behaved 'cuddly' programs - nasty ones like arcade
- games and some art packages won't switch very well at all. NEVER
- SWITCH PROGRAMS WHEN THE DISK DRIVE IS BEING ACCESSED, DURING
- PRINTER OUTPUT OR OTHER I/O IS GOING ON - WAIT TILL THE MACHINE
- ISN'T BUSY! Above all, don't trust your company accounts to an
- application you are switching - you will probably be OK, but
- crashes can occur!
-
- Also remember that each section has HALF of the normally available
- RAM available to it. On a 1040ST system that means each side has
- about 360K free - on a 520ST only about 150K is free on each side.
- If you have only a 512K system don't try and load a bunch of desk
- accessories and other bits and pieces else you won't have enough
- room to run any programs.
-
-
- Happy Hacking!
-
-
- David Jones
-
- UK :-
- Prestel MBX 219996836
- Compulink CIX user 'davjon'
-
- USA :-
- CompuServe 73657,1238
- BIX user 'davjon'
-
-