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1994-03-20
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4KB
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142 lines
Project...: 60Hz emulator
Version...: 1.04
Date......: 21 March 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 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
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
1 - Toggle color bar !! \
3 - Add ± one line to timer buffer |
4 - Sub ± one line to timer buffer |
5 - Add one line to display rows | Don't use these unless you
6 - Sub one line from display rows | know what you're doing !!
7 - Add one line to end of screen | (You cannot use these if
8 - Sub one line from end of screen | the BIG FAT-Agnus is used !)
9 - To set all values to default /
(PS: Doesn't work with the KeyPad !)
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 was already installed !
-> Naughty boy (or girl?)!, you may only install it once !!
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.
've fun,
»»» NTSC for ALL «««
PS1: Don't forget to send me that dollar (or disk).
PS2: Who knows how to auto-detach a program from the CLI ?
(without memory loss). Write me !, (only in assembler please !!)