Z80 control board / EPROM Programming

[Mr. Phil]

A friend of mine and I are studying up on microprocessor interfacing and are
teaching ourselves about the Z80. We wired up the processor to an 8k static
RAM (6264), and 8k EPROM (2764), and we also have an 8255 for I/O. We have
but one problem,... we don't have an EPROM programmer!

Does anyone out there have a broken one (I can try to repair it) that
they're getting rid of? I can cover the shipping. We're trying to go as
inexpensive as possible. Any help would be greatly appreciated. Thank you!

-Phil

P.S. - Please send me an e-mail at draeyoc1@aol.com . Thanks!

 

[Pankajkumar Chauhan]

"Mr. Phil" <draeyoc1@aol.com> writes:

A friend of mine and I are studying up on microprocessor interfacing and are
teaching ourselves about the Z80. We wired up the processor to an 8k static
RAM (6264), and 8k EPROM (2764), and we also have an 8255 for I/O. We have
but one problem,... we don't have an EPROM programmer!

Does anyone out there have a broken one (I can try to repair it) that
they're getting rid of? I can cover the shipping. We're trying to go as
inexpensive as possible. Any help would be greatly appreciated. Thank you!

-Phil
Hello. How about trying to build one as outlined at http://www.willem.org/?

It may not be dirt cheap, but will give a lifelong satisfaction.

Pankaj

P.S. - Please send me an e-mail at draeyoc1@aol.com . Thanks!

--
- Pankaj

----------------------------------------------------------------------
One OS to rule them all, one OS to find them,
One OS to bring them all and in the darkness bind them,
In the Land of Redmond where the Shadows lie.
----------------------------------------------------------------------

 

[Mr. Phil]

That's the problem. We're building the Z80 board we have from scrap
components off old circuit boards and junk computers. We don't have money
to spend on parts.
It has taken us over a month to put the Z80 board together, so building a
programmer would probably take us just as long.
I was hoping that if someone had a junk programmer kicking around, I could
try to fix it. It never hurts to ask.

-Phil

Hello. How about trying to build one as outlined at
http://www.willem.org/?
It may not be dirt cheap, but will give a lifelong satisfaction.

 

[Creamed_emu]

Mr. Phil <draeyoc1@aol.com> wrote in message
news:HOVub.117699$ji3.83888@twister.nyroc.rr.com...

That's the problem. We're building the Z80 board we have from scrap
components off old circuit boards and junk computers. We don't have money
to spend on parts.
It has taken us over a month to put the Z80 board together, so building a
programmer would probably take us just as long.
I was hoping that if someone had a junk programmer kicking around, I could
try to fix it. It never hurts to ask.

-Phil

Hello. How about trying to build one as outlined at
http://www.willem.org/?
It may not be dirt cheap, but will give a lifelong satisfaction.

if u can get your hands on a second SRAM chip, use it to emulate an EPROM
chip, this can be easily done through the parallel port with a binary
counter to increment the address line. Make sure u use a buffer of some sort
to remove the noise from the PC