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Qwerty
Joined: 20 May 2005
Posts: 3141
Location: Germany
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 Posted: Mon May 23, 2016 2:01 pm Post subject: |
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I confirm the prototype (and the converter). Thanks!  |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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molka
Joined: 17 Mar 2011
Posts: 2416
Location: Budapest, Hungary
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| Posted: Mon May 23, 2016 3:27 pm Post subject: |
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Thanks for the orders! I'll do my best to get your testers ASAP.
I've just finished testing my 8086/8088 + 8087.
From 88 CPUs all work but one. 8 FPUs all work. 
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xhoba
Joined: 20 Apr 2009
Posts: 4596
Location: Picardie, France
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molka
Joined: 17 Mar 2011
Posts: 2416
Location: Budapest, Hungary
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| Posted: Sun Jun 05, 2016 2:21 pm Post subject: |
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| xsecret wrote: | | molka wrote: | | xsecret wrote: | Damn cool!
Can you describe how it works exactly ? |
Are you interested in SW or HW? |
Hardware |
So, briefly the key features:
- the test-board has 8 bit memories (8K ROM + 2 or 8K RAM)
- the address latch is formed by 4 x 4bit parallel loaded counters
- the memory access is separated from CPU. There are 2 x 8bit buffer for output and 2 x 8bit latch for input data transfer.
- a wait state / memory access logic circuit controls the real memory read/write, while the CPU is in wait state. In case of 16bit data transfer the address counters are incremented between the transfer of the two bytes. And when the data transfer (between buffer -> memory or memory -> latch) is done set the READY signal to let the CPU run further.
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kpt_future
Joined: 11 Jan 2009
Posts: 2048
Location: CZ
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| Posted: Tue Jun 07, 2016 11:07 am Post subject: |
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one tester (v1.0) with one PLCC adapter for me, please
thanks |
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jrmunro
Joined: 01 Feb 2003
Posts: 3149
Location: Vancouver, Canada
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| Posted: Tue Jul 05, 2016 7:04 pm Post subject: |
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| I received my tester today. |
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molka
Joined: 17 Mar 2011
Posts: 2416
Location: Budapest, Hungary
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| Posted: Wed Jul 06, 2016 1:29 am Post subject: |
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| jrmunro wrote: | | I received my tester today. |
Thanks! Good luck for testing. lol
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Robev
Joined: 10 Mar 2006
Posts: 3693
Location: New Zealand
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| Posted: Wed Jul 06, 2016 4:16 am Post subject: |
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Mine arrived last Thursday but I haven;t had the time to test it yet
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Fri Jul 08, 2016 9:27 pm Post subject: |
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With the value of the pound dropping (due to the country voting to leave the EU) I am going to have to cancel my request for a board, as it is getting more expensive by the day.
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molka
Joined: 17 Mar 2011
Posts: 2416
Location: Budapest, Hungary
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| Posted: Wed Jul 13, 2016 1:57 am Post subject: |
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| debs3759 wrote: | | With the value of the pound dropping (due to the country voting to leave the EU) I am going to have to cancel my request for a board, as it is getting more expensive by the day. |
OK. No problem. I understand you, I was many times in the same situation due to the bad exchange rate of HU Forint / $ or EUR.
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Chook
Joined: 29 Oct 2008
Posts: 2250
Location: Australia
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| Posted: Thu Jul 14, 2016 10:52 am Post subject: |
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I received my tester today. All the 8086 and 8088 I have tested work, but whenever I plug in an 8087 I get a rom check sum failure error. Only the combination of a P8086 and a C8087-3 has worked.
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General failure reading disk in drive A
Who's General Failure and why is he reading my disk? |
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molka
Joined: 17 Mar 2011
Posts: 2416
Location: Budapest, Hungary
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| Posted: Fri Jul 15, 2016 1:31 am Post subject: |
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| Chook wrote: | | I received my tester today. All the 8086 and 8088 I have tested work, but whenever I plug in an 8087 I get a rom check sum failure error. Only the combination of a P8086 and a C8087-3 has worked. |
It's maybe related to the FPUs high power consumption.
Do you use USB power supply? if so you should try powering the board with a 5V 2-3A DC adapter.
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Chook
Joined: 29 Oct 2008
Posts: 2250
Location: Australia
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| Posted: Fri Jul 15, 2016 1:54 am Post subject: |
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Yes, I am using USB power supply. I will have to get myself a 5V adapter.
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General failure reading disk in drive A
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molka
Joined: 17 Mar 2011
Posts: 2416
Location: Budapest, Hungary
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| Posted: Sat Jul 16, 2016 10:51 am Post subject: |
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I designed an expansion tool for the 8086/8088 tester that let it use for testing 80186/80188 CPUs.
With the 80186/188 expansion socket PGA, PLCC and CLCC CPUs can be tested.
The set contains the expansion board and a PLCC-68 and a CLCC-68 socket.
The set price is $16.00
Some hint for usage:
The expansion can be inserted into the ZIF socket instead of the CPU. Because 80186/188 do not work with 8087 FPU the FPU should be removed while using the expansion.
On the expansion there is a PGA-68 socket soldered, so PGA socketed CPU can be inserted directly.
For testing PLCC or CLCC CPUs the appropriate socket should be inserted into the PGA socket and the CPU can be inserted into the mounted socket.
Take care the socket and CPU orientation! Pin 1 must be in the upper left corner when insetring a socket or CPU.
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