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Author Topic: SymbOS (Read 444882 times)

Offline Zozosoft

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Re: SymbOS
« Reply #630 on: 2015.May.03. 10:18:22 »

Offline pear

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Re: SymbOS
« Reply #631 on: 2015.May.03. 10:28:57 »
WOW!
This is the standard speed of the CPU, if any turbo ?

Offline Zozosoft

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Re: SymbOS
« Reply #632 on: 2015.May.03. 10:34:08 »
This is the standard speed of the CPU, if any turbo ?
Standard 4MHz (you can see it the startup screen).

10MHz Enterprise in my video.

Offline gflorez

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Re: SymbOS
« Reply #633 on: 2015.May.03. 17:52:53 »
By the way.... seems there is one more EP user with mouse....

Offline Prodatron

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Re: SymbOS
« Reply #634 on: 2015.May.03. 17:58:12 »
Cool video, thanks for sharing!! :)
And I like the background tune! :)

By the way.... seems there is one more EP user with mouse....
At least in this new video there doesn't seem to be a mouse...

Offline gflorez

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Re: SymbOS
« Reply #635 on: 2015.May.03. 18:09:20 »
Oooh shit, you are right!

But this is an intolerable situation..... Mouses for the masses! Mices for everybody!

Offline Prodatron

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Re: SymbOS
« Reply #636 on: 2015.May.03. 18:16:05 »
But this is an intolerable situation..... Mouses for the masses! Mices for everybody!
I totally agree! :D

Offline Tuby128

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Re: SymbOS
« Reply #637 on: 2015.May.03. 18:49:30 »
Yeah, I agree too!

Offline gflorez

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Re: SymbOS
« Reply #638 on: 2015.May.03. 19:01:00 »
Ha, ha...!. Too squishy, Tuby128...


Prodatron, have you seen this thread?

There are the schematics of an easy to build mouse interface to attach directly a MSX mouse.

And another thing: in the Enterprise mouse reading subroutine I gave you, I've discovered that the four delays(8,5,5,5) can be changed to 8,1,1,1 for a 4Mhz Z80 without problems. Then it has similar delays to the timing of a  MSX machine.

The only difference between a MSX mouse and a Neos mouse(besides of the position of the pins) is an inverter inside the MSX one. The Strobe signal is exactly the same but inverted, when on one is 0v the other has 5v.

Offline Prodatron

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Re: SymbOS
« Reply #639 on: 2015.May.04. 01:31:43 »
Cool, even for me who is pretty bad in hardware stuff this doesn't look to complicated :)
Ok, I can change the delays, this will save some CPU time!

Offline lgb

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Re: SymbOS
« Reply #640 on: 2015.May.04. 09:16:07 »
Cool, even for me who is pretty bad in hardware stuff this doesn't look to complicated :)
Ok, I can change the delays, this will save some CPU time!

Does it mean that it won't run with 10MHz EP128 then?

Offline gflorez

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Re: SymbOS
« Reply #641 on: 2015.May.04. 11:20:15 »
It will work, that modified settings are for a 4MHz Z80(mine), only as a starting point. Indeed Zozo's 10Mhz machine works very well with the Neos+Boxsoft mouse in SymbOS because Prodatron has adapted accordingly the delays in the reading subroutine.
« Last Edit: 2015.May.04. 11:24:02 by gflorez »

Offline Prodatron

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Re: SymbOS
« Reply #642 on: 2015.May.04. 13:51:10 »
Ah yes, I didn't have the 10MHz in mind. I had a look at it again.
Using 8-1-1-1 instead of 8-5-5-5 would save 84 microseconds on a 4MHz system per 50Hz frame, which is not so much (1,3 Rasterlines). SymbOS does a speed detection at the beginning, which could be used for modifying the mouse routine, but then you can't switch to 10MHz when you booted it in 4MHz mode. Anyway my next EP specific work will be fixing the remaining FDC issues.

Offline Zozosoft

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Re: SymbOS
« Reply #643 on: 2015.May.04. 14:21:51 »
Anyway my next EP specific work will be fixing the remaining FDC issues.
Now I sent mail about it!

Offline Prodatron

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Re: SymbOS
« Reply #644 on: 2015.May.04. 14:28:24 »
Cool, good news, thanks a lot!! :)