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- Double Screen-Heigh emulator for STE, MEGA STE (and TT ??) VERSION 2
- """""""""""""""""""""""""""""""""""""""""""""""""""""""""" """""""""
- WHY A NEW VERSION ? Well, the old version allocated 64000 bytes for
- the new screen in low memory. But the old screen still took up the
- 32000 bytes in high memory and that was a big waste (especially for
- those with 520 and 1040 machines). Instead of allocating 64000 new
- bytes for the new screen version 2 expands the old screen by 32000
- bytes (moving the top of memory down) and then saves 32000 bytes !!!
- Version 2 takes up totally 32522 bytes including the resident code
- and should be the smallest big-screen emulator available for the STE.
-
- Why does this program only work om STE and not on standard ST ????
- """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
- Both the display modes uses new hardware registers on the STE to
- make the code small. The interlace emulation could not be made
- on the ST without moving the whole screen all the time and taking up
- all the CPU-time. On the STE it takes a few instrutions each VBL.
-
- Read this before you install DOUBLE2.PRG in your AUTO-folder
- """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""
- To install DOUBLE2.PRG just put it in your auto-folder as early as
- possible (and be sure it's before Quick-ST etc). If you have any
- programs that allocates reset-resident memory by moving the screen
- (like Harlekins RESETMEM) you MUST put DOUBLE2.PRG after those !!!
- If you use Harlekin you MUST use RESETMEM.PRG first in AUTO-folder.
- When the computer boots DOUBLE2.PRG will NOT install itself unless
- you are holding down one of the SHIFT keys. If installed in mono it
- will emulate a 640 x 800 screen (double height) and if installed in
- color (desktop.inf must be medium res) a 640 x 400 screen.
-
- RIGHT-SHIFT while booting --> Up/Down scrolling emulator
- """"""""""""""""""""""""""""""""""""""""""""""""""""""""
- When you move the mouse close to the top or bottom of the visible
- screen area the screen will scroll down or up to display more of the
- screen. Think of your monitor screen as a window showing a part of
- the whole area. In this mode text-based program (TOS etc) will still
- use only the upper half of the screen (the normal area) as this worked
- best with the programs I tested. Most GEM based programs will use the
- whole screen (I made it for use with Calamus DTP and Timeworks DTP).
-
- LEFT-SHIFT while booting --> Interlaced screen display
- """"""""""""""""""""""""""""""""""""""""""""""""""""""
- This will double the number of lines WITHOUT having to scroll the
- screen by condensing the screen display. This mode will flicker some
- (users of color monitors or TV should use 60 Hz) but you might get a
- better result by adjusting the contrast (yes, it looks like an Amiga).
- In this mode both TOS and GEM-programs will use the whole screen area.
-
- Please Support my ShareWare and Public Domain developement
- """"""""""""""""""""""""""""""""""""""""""""""""""""""""""
- Send 100 NKr (equals $15, DM25, 10 pounds, 30 guilders) by cheque or to
- norwegian postgiro account 0537 6846174 (see your local post office for
- a transfer card, "Service des cheques postaux, Avis de versement VP1").
- Payable to: Lars-Erik 0sterud, 0kriveien 39, N-1349 Rykkinn, Norway.
-
- If you have any problem, ideas, bug-reports, wishes etc contact me !!
- """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
- Lars-Erik 0sterud E-mail: larserio@ifi.uio.no (usenet)
- Okriveien 39 Call me at: +47 2 13 15 71 (voice phone)
- N-1349 Rykkinn or ABK-BBS: +47 2 13 26 59 (300-9600 bps)
- Norway ____ ______ _____________________________________
- /___ / The norwegian ST Contact us
- ____/ / Klubben, user association at ABK-BBS
-