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Author Topic: Good edge connectors and cables. (Read 1265 times)

Offline Zozosoft

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Re: Good looking edge connectors?
« Reply #15 on: 2017.March.20. 11:38:12 »
More photos from Werner, all are original English cables:

Offline gflorez

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Re: Good looking edge connectors?
« Reply #16 on: 2017.March.20. 14:29:37 »
Then those connectors can be part of the original Enterprise futuristic design.

Does Werner have the print out measures of the other connectors?
« Last Edit: 2017.March.21. 07:06:26 by gflorez »

Offline gflorez

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Re: Good looking edge connectors?
« Reply #17 on: 2017.March.26. 16:30:09 »
I had detachable male joystick connectors from some cables I bought from Ebay to make my joysticks EnterMice compatible.

They are the exact measure for the 7 pin edge housing that the Monitor and Printer ports need.

With a saw and a cutter y have modified them a little. The square mouth, the side channel and the upside guide.


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For not being careful enough I've made some scratches on the case, but it looks good, right?
« Last Edit: 2017.March.26. 17:28:19 by gflorez »

Offline gflorez

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Re: Good looking edge connectors?
« Reply #18 on: 2017.April.01. 01:45:01 »
I have made a disturbing discovering: the mainboard edge connectors are displaced from the case square holes.

On my old EP(Issue 4) the displacement is about a millimetre, but  on my new EP(Issue 6) grows up to almost 1,5mm.

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The problem is that old female edge connectors had only single 1mm narrow contacts:

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Example: Patkány Edge connector.

While "modern" edge connectors have two contacts per pin, that extend the contact surface more than 1,5mm.

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Example: Retrocables RGB Edge connector.

I was struggling my mind trying to figure out why the Patkány refused to work on my new EP, then I have seen the difference on the mainboard position.
« Last Edit: 2017.April.03. 17:01:50 by gflorez »

Offline gflorez

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Re: Good looking edge connectors?
« Reply #19 on: 2017.April.25. 13:10:28 »
Some test of cases. Blue edge connectors look fine...

Offline gflorez

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Re: Good looking edge connectors?
« Reply #20 on: 2017.April.26. 15:10:12 »
I have still parts to make ten more RGB or parallel cables. And thirteen full populated joystick cables.

Offline gflorez

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Re: Good edge connectors and cables.
« Reply #21 on: 2017.April.26. 22:23:22 »
The cable bought to Retrocables is a cheap lead sielded wth only aluminium foil, but it does its work perfectly on the Enterprise.

The better option for me would be a VGA monitor lead, as they have at least shielded the colours, but a simple eight leads shielded cable will suit me.

Also, I opt in my RGB cables to take the sound from the Tape out connector, as it gives a louder(standard) volume level. The sound output at the Monitor connector is so low that forces me to set the volume at max on the TV.

Offline gflorez

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Re: Good edge connectors and cables.
« Reply #22 on: 2017.May.13. 01:55:45 »
Now that I have two EPs, I want to test the NET device. I have cut one of the housings just at the middle as a test for a serial connector.

Offline gflorez

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Re: Good edge connectors and cables.
« Reply #23 on: 2017.May.20. 21:50:49 »
After reducing heads like the Jibaro indians I have soldered the lead.



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I have made some test with the cable. The NET works really good with two computers.

If I set both of them to 10 Mhz, the Net still works perfectly, but at 24000 baud....
« Last Edit: 2017.May.20. 22:04:27 by gflorez »

Offline geco

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Re: Good edge connectors and cables.
« Reply #24 on: 2017.May.20. 22:59:47 »

I have made some test with the cable. The NET works really good with two computers.

If I set both of them to 10 Mhz, the Net still works perfectly, but at 24000 baud....
sounds great :-)

Offline gflorez

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Re: Good edge connectors and cables.
« Reply #25 on: 2017.May.21. 00:03:56 »
Maybe we can rise the 9600 baud top on the Serial-Net driver.

If I execute "SET SERIAL BAUD 16" or greater, the system var stores the number without problems, but the driver only takes MOD 16.

After all, as it is a processor task, the EP wastes all its time on it, independently of the baud rate.

And remember the Dutch Midi project that reached 31250 bauds with a machine code routine directly actuating the registers at ports B6h and B7h.

Offline gflorez

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Re: Good edge connectors and cables.
« Reply #26 on: 2017.May.21. 12:30:50 »
As you can see, there are 16 settings, from 0 to 15, but both 14 and 15 are 9600 bauds.

A new super-fast baud-rate can be added at 14 or 15 positions or rearrange completely the table. There is an excessive number of slow rates.

The problem here is, how can the new baud rate be measured?


Offline geco

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Re: Good edge connectors and cables.
« Reply #27 on: 2017.May.21. 12:53:25 »
I do not know how speed setting is done based on the table, but as I think faster setting is not possible based on these values, without modification of EXOS speed setting part also. :(

Offline gflorez

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Re: Good edge connectors and cables.
« Reply #28 on: 2017.May.21. 13:06:28 »
Yes, they seem like delay cycles. At 14 and 15 they are already very low.


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Below 300 bauds are settings for very old Teletype machines.

A more rational and standard settings list can be 110, 150, 300, 1200, 2400, 4800, 9600, 19200, 38400, etc.

And adding 31250 the EP could control Midi devices directly....
« Last Edit: 2017.May.21. 13:32:48 by gflorez »

Offline gflorez

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Re: Good edge connectors and cables.
« Reply #29 on: 2017.May.21. 16:21:18 »
Passing DICT_ENG.BAS(Dictator, 27KB) took 44 sec at 4Mhz, and 24 sec at 10Mhz.

It seems that another factors are implied on the baud rate than only the processor frequency.