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Text File
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1987-04-21
|
4KB
|
84 lines
+-------------------------------------------------------+
| Hi! Fellow Members (and Memberesses ??) of The Source |
+-------------------------------------------------------+
This is a short documentation file to explain how to use my new & improved
Picture booters on any new Source Compacted Demo Disks !!
The reasons for updating the original NeoChrome booter are:-
1) The original is a ripped of version from Solomon's Key that I used
in my Super Virus Killer v1.0 !!
2) I wanted to do other picture formats and also teach myself some more
snippets of 68000 !!
3) I can now add another 6 recognised bootsectors to Professional Virus
Killer v2.1 (when I finally get it finished !!).
There are several options available, and they are:-
Bootsector Option File Length
----------------- -----------
a) Standard NeoChrome picture (text on or off) 32128 bytes
a) Standard Degas picture (text on or off) 32034/32066 bytes
a) Standard Art Director picture (text on or off) 32512 bytes
a) Standard Tiny packed picture (text on or off) <32000 bytes !!
Obviously the best option is the Tiny picture option, which compresses
'The Source' Logo used on menus 74-78 down to 8K - 24K more disk space
for you to fill up !!
After getting all of these options working (after several hours of
code-shifting and optimizing !!), I can now present you with another
two options to use instead of the above !!
Imgaine that your disk space is SO tight, that making an AUTO folder
would waste a cluster ?? Well now you don't have to !! Simply shove
either a Degas (why waste space though !!) or Tiny picture (that's
much better) onto a disk, along with your menu (in the root directory)
and use either 'PI1_PROG.S' or 'TN1_PROG.S' and assemble this to your
menu disk !!
One point to notice is that if you want to use this bootsector code on
a menu disk, then it has to be a menu where the DESKTOP is NOT REQUIRED !!
Quitting from a menu in an AUTO folder is OK, as GEM will be initialised
and eventually the desktop will materialise - BUT as the menu is loaded
from a bootsector, GEM is totally ignored !!
Installing a new bootsector
---------------------------
Simple enough !! Load in the bootsector you want to use. Alter the
picture filename (and how long it is if it's a Tiny picture) and the
program filename (if you're using this option) and switch the text
on or off if required. Assemble the bootsector to memory and make
sure that it equals 480 bytes in length !! If not, then alter the
'blanks' label (in word values !!) so that the bootsector does equal
480 bytes !!
Don't put drive identifiers into the filenames as people who unfortunately
have to boot from drive B: will not be able to look at your menus !!
Next, goto the TOP of the bootsector's source listing (save it now
if you are not sure it's going to work !!), and press 'ALT+I' so that
Devpac wants another source file to place above your bootsector source.
The file you require is 'INSTALL.S' (naturally !!) and when you have
inserted this file - assemble everything to memory and run it. Install
the new bootsector onto your test disk - quit Devpac (ignoring the
'source code has been altered' alert box) and test your menu.
If something doesn't work - then tough, because you are doing something
wrong and it's nothing to do with my source code !!
See you,
MUG U.K™ (Member of 'The Source') - 16/10/1991