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60hz.doc
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1995-01-09
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5KB
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158 lines
Project...: 60Hz emulator
Version...: 1.05
Date......: 26 April 1991
Author....: P. de Boer
Assembler.: AsmOne V1.0/DevPac 2.14
Preface:
This program is shareware, this means that you can copy it freely as long
as you don't ask any more money for it than a nominal fee for copying. If
you intend to use this program, send $1 (or a verified quality disk) to the
address below. If you want to distribute this program you should keep this
document with it. This program cannot be used for commercial purposes
without written permission from the author.
If you have suggestions or remarks about this program, or if you find
any bugs, please let me know.
Write to the following address:
P. de Boer
Zeeloodsenlaan 79
1785 BM Den Helder
Holland
Contents:
1 - Introduction
2 - How to use it
3 - Error messages
4 - Important notes
5 - Update report
Introduction:
I wrote this program because some other 60Hz emulators like PowerUtititly
from Amicon and BootPal/BootNTSC from Nico Francois had some limitations.
The program is written in assembler and uses 99% system functions to emulate
the 60Hz. Almost any utility and some games now run in a NTSC screen.
If you have a FATTER agnus then almost any game will run in NTSC. Since 60Hz
will then use the hardware to emulate NTSC.
Have fun with it !
How to use it:
Usage: 60Hz [OPT] <OPTIONS>
Where options stand for:
? - Help.
i - Will install the emulator and activates NTSC mode immediately.
I - Will install the emulator, but will stay in PAL mode.
K/k - Will kill the emulator, if found in memory.
R/r - Add this to prevent the emulator to install itself resident in
memory. So, the emulator will be gone after a reset.
A/a - Add this and 60Hz will ignore a FATTER agnus, so you will always
have a software emulation.
If the installation was succesfull, you can press the following keys:
Press : <LEFT-ALT>+<LEFT-SHIFT>+<CTRL> together with:
ESC - To kill the emulator
0 - Toggle between PAL and NTSC
9 - Toggle between Software and Hardware emulation
1 - Toggle color bar !! \
2 - To set all values to default |
3 - Add ± one line to timer buffer | Don't use these unless you
4 - Sub ± one line to timer buffer | know what you're doing !!
5 - Add one line to display rows | (You cannot use these if
6 - Sub one line from display rows | the BIG FAT-Agnus is used !)
7 - Add one line to end of screen |
8 - Sub one line from end of screen /
(PS: Doesn't work with the KeyPad !)
Executing 60Hz again with new options, will modify the previous installed
emulator.
Error messages:
You can get a few (error) messages:
60Hz emulator installed !
-> The emulator was installed correctly
BIG FAT-Agnus found !
-> The emulator found a BIG FAT-Agnus. The emulator will now use the
hardware to switch between PAL and NTSC. (use 'OPT A' to overide this)
Emulator will be gone after reset !
-> You selected 'OPT R', so the emulator will not be resident in memory.
60Hz emulator flags updated !
-> The emulator installed the new mode, specified in the options
Unable to update 60Hz flags
-> For some reason, the flags couldn't be updated.
Installation failed !
-> Installation of the emulator failed because it couldn't open
the ciab.resource or allocate the timer
PS: You'll get an ALERT if the emulator couldn't open the resource
or allocate the timer.
Important notes:
NOTE 1: If the screen flashes sometime, try pressing LA+LS+C+3 a few times.
NOTE 2: Your monitor (TV) may have some trouble synchronizing on the 60Hz
signal, so don't worry if the screen flashes for a moment.
NOTE 3: If you have your power-supply standing near your monitor, the screen
may become unstable in 60Hz. Putting your power-supply further away
from the monitor should solve the problem.
NOTE 4: If you have a BIG FAT-Agnus and Power PC-Board, you must use OPT A.
Because switching the Agnus to 60Hz (in general) will cause the
RAMDISK of the PC board to crash.
Update report:
V1.05 Update:
=============
Added some new features, and removed the undocumented one (bugs)
Killed the keyboard bug, this bug caused the keyboard to go crazy
New features: - full control from cli over already installed emulator
- you can noew switch between hardware and software emulation
after installation.
've fun,
»»» NTSC for ALL «««
PS: Don't forget to send me that dollar (or a VERIFIED quality disk).