Z80 PLCC-44 to DIP-40 adapter

[T Gerbic]

I am looking for some, in the US, Z80 PLCC adapters. Anyone have any spare adapters or are going to have some made?

[Laszlo Szolnoki]

If it helps, I have made a test adapter for the TL76. I have tested the 28-pin PLCC, but not the 44-pin. However, it should work.  The board was manufactured by JLCPB. I still have some boards left. I have attached the EAGLE files and the production files.

Cheers, Laszlo

[Tadeusz Pycio]

Question unrelated to the topic. Are you satisfied with this programmer? Perhaps my T76 is a bit temperamental, but I have never been able to program ATtiny2313/4313 chips on it correctly, and I often have problems with the SST39SF040 chip, which my old TL866CS handles flawlessly.

[Douglas Miller]

I briefly looked into using PLCC44 Z80s in a DIP-40 application, and convinced myself there was no "standard" adapter (like what's used for EEPROMs) that would work. The DIP-40 Z80 pinout does not have a simple translation to the PLCC44 Z80, although I don't recall evaluating just how complex it was. Since you're asking specifically for the PLCC44 Z80, I assume you should get responses that will work in that application.

[Laszlo Szolnoki]

So far, yes. However, I bought it to be able to program ATF2500 CPLDs. These were all on the original parts list. Unfortunately, they have not yet been implemented. I am having problems with the chip ID for SST39SD040. Disabling verification is a good workaround. I switched from the TL866II+ to be able to program 25 V EPROMs. Overall, it works for me. If Xgecu implements the ATF2500, I'll be satisfied. And all of this under Wine/Linux.

[Mark T]

This post in RC2014 group might help. If I posted the link correctly, otherwise search for z80 plcc in RC2014 group.

Martin also attached the gerbers, though I haven’t tested these myself.

https://groups.google.com/g/rc2014-z80/c/n254K4NyB3c/m/EguxFjDlEwAJ

[T Gerbic]

A regular PLCC-44 to dip-40 will not work as the Z80 in PLCC form has a different pin number assignment from a dip version, so will not work.  I am looking for any spare adapters specific to the Z80. I see them on ebay in Europe but none can be shipped to the US.  I was hoping not to have to make my own. 

[Mark T]

If I read the linked post correctly it was for the z80.

[T Gerbic]

It is specific. There is an endless supply of PLCC-44 to DIP-40 adapters but none will work with a Z80 PLCC-44. The pin-out mapping is not the same.

[Mark T]

Martin’s post was specific “I've made and tested a little Z80 CPU PLCC44 to DIP40 adaptor, any of you are interested in gerber or KiCad files?” and he provided the gerber files as an attachment to a later post in the same thread.

[T Gerbic]

Martin's is specifically what I am looking for. I was hoping not to have to have them made but rather that someone may have one or more.  They are on ebay but none of the ebay operations will ship to the US. 

[T Gerbic]

Martin fixed the shipping issue and you can now order his boards to be shipped to the US. 

[Christer Karlsson]

Not sure if shipping issues have been resolved, as most mail services in Europe cancelled all small package delivery to the USA this weekend, due to unclear rules and lack of clarification on how and where the tariffs should be collected.

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[Christer Karlsson]

Not sure if shipping issues have been resolved, as most mail services in Europe cancelled all small package delivery to the USA this weekend, due to unclear rules and lack of clarification on how and where the tariffs should be collected.

https://www.theguardian.com/business/2025/aug/25/postal-services-in-europe-suspend-parcel-shipments-to-us-amid-uncertainty-over-tariffs

On Sun, Aug 24, 2025 at 10:39 PM T Gerbic <tge...@gmail.com> wrote:

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[Alan Cox]

Nope just about every EU carrier is suspending US shipping until the mess is sorted out except for gifts of low value.

UK carriers are stopping from tomorrow. Similar goings on elsewhere in the world

If it does get sorted on current level of paperwork demands they are also talking big fees for the paperwork so you may be looking at €50 or more in processing fee plus tariff plus shipping.

Maybe the smugglers will switch from fentanyl to retrocomputers ;-)

Alan

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[Christer Karlsson]

@Alan Cox, here is a story from this summer. 
========================================
An example of how strange the tariffs hit.  If I order PCB from US, the quotes I get is about $5 per square inch (for 4x3 inches), at places like DigiKey, Onboard, PCB Builder etc, or you don't get a quote at all if you don't provide an email and allow them to first process your files (WellPCB, RushPCB etc), with a manufacturing time of 5 days.
Should I order from China (PCBway, JLC etc) I pay $5-7 dollars for 10 boards (100x100mm, so slightly different than the 4x3, but similar area), with same day manufacturing (meant next day due to time difference), and on the first order I get a coupon for $5 off, in reality not paying at all for the boards.  
But I have to pay DHL $26 in shipping (still cheaper than any order from the USA).  When the board arrives in the USA I pay: $21.06 in tax, well if I break it down it is $1.30 in import duty, and $3.76 in tariffs, plus $17 in handling fee to DHL.  Yep, DHL charges you $17 to keep track of the paid tax! 
So the total cost became about $48 for 10 boards, where DHL cashed in $43, IRS $4.06 and not a cent went to China.This was still cheaper and faster delivery than it would have been ordering from USA (the quotes I got was $600 dollars for 10 boards made in 2 days, if I co9uld accept 5 day manufacturing they asked for $176).  
Yeah tariffs really hurt China, and we should really bring the jobs back to the USA.  What got me the most was that so many of the US manufacturers didn't even want to make an instant quote, and that they claim the cost is $5 per square inch. The only winners on this are DHL, FedEx, UPS, BTW USPS do not collect and handle tax and tariffs (guess because of the unpredictable behaviour when it comes to tariffs ), so that was not an option.
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Things became a little bit better later in the summer, now PCBway and JLC collect the tariffs and handle the book keeping, so the package is not held at the Port of Entry until I have paid what the American shipping company deems I owe them and the IRS in tax and tariffs. This of course only works as long as the tariffs don't become unpredictable again.

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[Mark T]

I stopped using DHL due to the customs handling charges, they were still charging this for orders below the $20 threshold for canada import duty.