At 01:00 PM 8/20/99 +0200, you wrote:
>By the way, how did you solve the joystickport timing-problem???
>Joystick and JoyNet would be glad to use the full speed of the Z380.
>However, the Z380 is too fast for the mouse when a program is not using
>BIOS-routines... A lot of programs won't use the BIOS for mouse-readout
>though... So the mouse will then just not work??? Or could there be some
>(software-)switch (change a bit somewhere in the MSX-Engine) to slow down
>the joystickport I/O access?
Please don't slow down joystick port I/O access on account of JoyNet!
If you use a delay insensitive protocol, a faster CPU will speed up
transfer rates. Only a protocol that depends on timing will suffer.
Why is a protocol that depends on timing a bad thing?
1. You need to make different versions for 3.5MHz, 7MHz, turbo R and Z380.
2. The cable length matters (longer cables are slower).
3. Programs running on non-MSX computers (especially multitasking
environments) will be very difficult to write.
By the way, I think I have solved the lack of error detection in my
protocol. When I have more time, I will implement the improved protocol and
do some serious testing.
Bye,
Maarten
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