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Author Topic: 6Mhz and more... (Read 23854 times)

Offline Ep128

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Re: 6Mhz and more...
« Reply #45 on: 2016.December.21. 00:42:41 »
The Polish also: lutowanie (soldering) and spawanie (welding).

:smt041

Offline gflorez

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Re: 6Mhz and more...
« Reply #46 on: 2016.December.23. 11:28:16 »
I have made some tests.

Some times the Fast Memory Check returns errors on some segments, but I have installed the array of pull-up resistors on the data bus.

On 10Mhz frequency the mouse pointer only moves vertical.


May I change the 74LS157 to a 74F157?

Offline gflorez

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Re: 6Mhz and more...
« Reply #47 on: 2017.January.26. 13:48:50 »
I have changed the 74LS157 for a 74F157, but still the EnterMice doesn't work on 10Mz mode. I will try modifying the delays on the driver.

Also, I will overclock my old EP just to make comparisons.

Offline gflorez

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Re: 6Mhz and more...
« Reply #48 on: 2017.January.28. 09:26:53 »
Now, one more 10Mz Enterprise exists....

Thanks Zozo for the detailled information.
« Last Edit: 2017.January.28. 09:30:06 by gflorez »

Offline geco

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Re: 6Mhz and more...
« Reply #49 on: 2017.January.28. 12:58:16 »
:smt041 :smt041 :smt041

Offline gflorez

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Re: 6Mhz and more...
« Reply #50 on: 2017.January.30. 15:47:42 »
I have increased the delays of the reading routine of the Mouse driver. Now EnterMice works with EGI and SymbOS while on 10Mhz mode.


Offline Zozosoft

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Re: 6Mhz and more...
« Reply #51 on: 2017.January.30. 16:12:04 »
I have increased the delays of the reading routine of the Mouse driver.
Where is the latest driver?
Quote
SymbOS while on 10Mhz mode.
? SymbOS don't use MOUSE.XR, it is have built in driver. And it is already worked for me in 10MHz :oops:

Offline gflorez

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Re: 6Mhz and more...
« Reply #52 on: 2017.January.30. 16:47:37 »
I know, only was making a list of the mouse programs that work on 10Mhz.

There isnĀ“t still a new Mouse driver version, I was only tweaking the delays on my working disassembly.

The EnterMice versions(:HELP MOUSE) give erroneous numbers on 10Mhz. I will try to fix it.

You can use it, but it is not definitive. It is version 1.10D, beta.

Offline gflorez

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Re: 6Mhz and more...
« Reply #53 on: 2017.July.10. 12:29:34 »
I've been thinking on a sort of variable processor clock source, like other computers have. Then, with a dial and sometimes a display, the computer can be totally freezed or overclocked easyly.

Something like this will suit perfectly the Enterprise turbo hack, because actually only the source frequency is changed by the selector.

Offline gflorez

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Re: 6Mhz and more...
« Reply #54 on: 2017.July.11. 00:31:04 »
I mean something like this module, but with the trimming potentiometer externalized to adjust the Processor clock on demand.





The best would be a similar module but with a display to exactly select the frequency.

Over-clock capable, but also under-clock.....

Offline Zozosoft

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Re: 6Mhz and more...
« Reply #55 on: 2017.July.11. 09:24:47 »
My dream is a programable oscillator. It is also will be good for Turbo EXDOS where needed 8,9.6,10,13.33333,16MHz.

I looked lot of, but not found any digitaly programable thing :-(

Offline gflorez

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Re: 6Mhz and more...
« Reply #56 on: 2017.July.11. 11:27:29 »
Yes, something like this for the Apple IIe.



But we don't need more than a configurable clock.(or two....)
« Last Edit: 2017.July.11. 11:31:37 by gflorez »

Offline BruceTanner

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Re: 6Mhz and more...
« Reply #57 on: 2017.July.11. 12:11:50 »
A wild idea :shock:: 16550 serial chips have a programmable baud rate generator with an output signal (called /BAUDOUT if I remember correctly) - I wonder if a modern version of the 16550 (with higher max clock input than the original) could be used? It would have to default to something usable on power-up of course!

Offline gflorez

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Re: 6Mhz and more...
« Reply #58 on: 2017.July.11. 14:15:24 »
Thanks Bruce. It is a very good idea. I have also asked pear for some aid, he is thinking about an easy  micro-controler solution.
« Last Edit: 2017.July.11. 14:22:18 by gflorez »

Offline gflorez

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Re: 6Mhz and more...
« Reply #59 on: 2017.July.11. 23:38:08 »
I have also found this chip:

They say on the Datasheet:  The DS1077 is a dual-output,   programmable,   fixed-frequency   oscillator   requiring   no   external components for operation. 

But I think that Pear is thinking on a powerful micro-controler doing itself the oscillator task.