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- This is the documentation for MONO_EMU.PRG v5.00
-
- Mick West
-
- 20th November 1988
-
- The mono emulator lets you use the high resolution mode on
- the atari ST, using a normal TV or monitor - i.e., you don't have
- to fork out £150 on an Atari SM125 High-rez mono monitor, if you
- want to run programs that normally only run in high resoution.
-
- The main use of the Mono Emulator is in running the large
- number of public domain mono-only programs. But there are also some
- commercial programs such as Signum and PCB Designer that also only
- run in monochrome.
-
- This is the fifth major version of the program. The first
- was printed in Popular Computing Weekley in Vol 6 Nos 43 & 44.
- This version has a number of improvements:
-
- o It will now run on any TOS, anywhere in the world
- o It can (must actually) be run from an AUTO folder
- o It works with SNAPSHOT.ACC and other similar programs
- o It is twice as fast as versions 1 and 2
- o It does not crash if you run it on a mono monitor
- so you can leave it in the AUTO folder
-
- How to use it.
- --------------
-
- Just copy it ( MONO_EMU.PRG ) into an AUTO folder. Then boot
- from this disk. It will load automatically and display a short
- message. There will be a prompt at the bottom of the screen
- asking you to input a number from 10 to 80. This controls how
- often the screen is updated and also, how much your program is
- slowed down by the emulator. An input of 10 gives a rather jerky
- display, but there is no noticeable decrease in speed. Using 80,
- is very smooth but the ST runs at about 56% of its normal speed
- If you just press " Return", you will get the default setting of
- 40, the ST will run at 75% of its normal speed and the display
- will be quite smooth enough.
-
- After entering the speed, you should be returned to a
- monochrome desktop with a grey background and little icons. You
- should now be able to load and run any monochrome program.
- The mono emulator uses about 34K of memory, so if you have only
- got 512K of RAM then you may encounter problems with some of the
- larger programs. This is more likely if you have some desk
- accessories loaded.
-
- You should use the mono emulator from an AUTO folder. If you
- simply load the program in the normal way, you will get a squashed
- half-screen version of the desktop. If you now go up to the
- Options menu, select "Set Preferences" and then click "OK", you
- will get the normal mono desktop back, but the menus and the dialog
- boxes will be squashed. Most odd!
-
- It does occasionally crash when trying to set up the machine
- to the right resolutions, it should work the next time it is run.
- It does not do this very often.
-
- Auto Folder Problems
- --------------------
-
- The ST sometimes gets very confused with it's auto folder. If
- you find that it crashes for no apparent reason then copy the programs
- out of the auto folder, delete the folder, create it again and copy
- the programs back in again, one at a time. The ST will run these
- programs in the order in which you put them in the folder, not in the
- order they appear in a directory window. It is probably a good idea
- to put the Mono Emulator in first, so the machine will be correctly
- configured when the other AUTO programs are run.
-
-
- History
- -------
-
- Version 0 - July 1987, Wanting to get a demo of PCB Designer to run
- I experiment with various methods and after two days I get one to
- work, thus the MONO EMULATOR is born. I am quite pleased with it and
- wonder if it could possibly be of much use to anyone. I send it off
- to PCW with little hope.
-
- Version 1 - October 1987, Published in Popular Computing Weekly, uses
- hundreds of ROM calls and is rather slow. I sell about 150 copies at
- four pounds each
-
- Version 2 - June 1988, The new ROMS start to proliferate, I write
- version 2 to run on the new ROMS using one ROM call. Very few version
- twos are sent out.
-
- Version 3 - June 1988, I have a flash of insight and make it twice as
- fast. Version 3 spreads across the world. Robtek start selling a Mono
- Emulator for 40 pounds, I realise I may have made a minor marketing
- error. But I have never heard of anyone buying the Robtek version.
-
- Version 4 - Sept 1988, I discover that it was defaulting to speed 10
- on the new ROMs, I remove this bug and stop it slowing down during
- disk accesses. Only one copy of version 4 is sent out.
-
- Version 5 - November 1988, Having been flooded by letters along the lines
- of : "Das Monoemulator c'est nicht funkzioneert" from the continent and
- the USA I sit down and work out how to make it work with any TOS. This,
- I think, will be the final version. Robtek are bankrupt. Every ST owner
- in britian has a copy. I have recieved two contributions for shareware
- one from the USA, the other from Sweden. I sometimes wonder if making it
- Public Domain was a good idea. How many copies would have sold at a tenner
- a go? In the depths of depression and strickened with poverty, I am forced
- to go and work for 'Binary Design'.
-
-
- If you want to write to me with any problems, praise,
- comments, money (it is shareware you know, and it saved you 150 quid),
- or anything else then write to:
-
- MICK WEST
- 27, LYNTON DRIVE
- SHIPLEY.
- WEST YORKSHIRE,
- BD18 3DJ
- ENGLAND
-
- Distribute!
-
-
- ----------------------------------------------------------------------
- Version 6.00
-
-
-
- This version uses the Blitter to convert mono to mid-rez screen.
- Speed is increased about 50% with this new feature.For example,using
- 40 for speed leaves about 84% of processor time left.Using 80 for speed
- is very smooth and the ST run at about 68% of its normal speed !!!.
- Using 100 (i.e 25Hz refresh frequency) is smoother but ST run at about
- 60% of its normal speed...Thanx to Mister BLITTER (say 'Yeah !').
- I think 50 is the best speed (ST runs at 80% of its normal speed).
- There's a new algorithm to convert screens, which is a bit smart.
- It works like a TV-screen ("entrelaced" mode (hu, do you speak english??))
- and was originally found by Jedi of Sector One, and converted by myself
- for the blitter. It's exaclty the same principle, but using even and odd
- lines separatly.
- You can select the old algorithm (if you don't like the new one,
- which creates some secondary visual effects) by pressing the '-' (minus) key
- just before the speed key.
- After the speed selector, please choose your favourite palette.
- There are three palettes: white (default one), green, or blue.
-
- This new version 6.00 was entirely recoded by myself, including blitter
- routs, and some few stuff too (like XBRA for vectors). Some few bugs, due to
- clipping-error (Gem draws out of the screen, exploding the emulator in the
- same time !!. Or have you ever seen some programs clearing the screen by
- themselves, but with a bugged code ?...Well, I did !!), are now avoid.
-
-
-
- In this folder,you should find the following files:
- MONO_EMU.PRG : Normal version of MONO_EMU
- MONO_EM6.PRG : Blitter -----------------
- MONO_EMU.S : Source #1
- MONO_EM6.S : Source #2
- MONO_EMU.DOC : This file !!
-
- If you want to get in touch with me or with DNT-Crew,please write
- to :
- Sylvain Langlade [NulloS]
- 62 bis rue de l'Oradou
- 63000 Clermont Ferrand
- FRANCE
-
- or contact me on 36-15 RTEL (or 36-14 RTEL2) in BAL NulloS
-
- Have a good time !
-
-
-
-