Need help reverse engineering Timex Store Demonstrator ROM file
Re: Need help reverse engineering Timex Store Demonstrator ROM file
the PCB had to be check.
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Kicad Project: (r 1.1)Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Re: Need help reverse engineering Timex Store Demonstrator ROM file
XavSnap,
As I told you about the 74LS133 voltage feed reversal a few posts ago here. I completely agreed with Paul! I fixed this problem with two "stacked" 16 pins sockets and two short wires on my "bugged" board.
I wondered whether can I add a few millimeters and centimeters to the board's height and slightly enlarge these edge connector's holes by editing the shared StoreDemo's file content. If so, then how can it be done?
Thank you very much in advance.
Cheers,
DesSony
As I told you about the 74LS133 voltage feed reversal a few posts ago here. I completely agreed with Paul! I fixed this problem with two "stacked" 16 pins sockets and two short wires on my "bugged" board.
I wondered whether can I add a few millimeters and centimeters to the board's height and slightly enlarge these edge connector's holes by editing the shared StoreDemo's file content. If so, then how can it be done?
Thank you very much in advance.
Cheers,
DesSony
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Hi DesSony, just tell me your whishes,dessony wrote: ↑Wed Oct 12, 2022 8:14 am XavSnap,
As I told you about the 74LS133 voltage feed reversal a few posts ago here. I completely agreed with Paul! I fixed this problem with two "stacked" 16 pins sockets and two short wires on my "bugged" board.
I wondered whether can I add a few millimeters and centimeters to the board's height and slightly enlarge these edge connector's holes by editing the shared StoreDemo's file content. If so, then how can it be done?
Thank you very much in advance.
Cheers,
DesSony
I am making a Version where the ROM is above the Zeddy Case so it fits the Zeddy better with a zif socket.
In theory, there is no difference between theory and practice. But, in practice, there is.
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Hi,
DesSony, you can use a DIL ribbon connector, to export the ZIF socket ?
https://www.ebay.com/itm/361985101589
and
https://www.ebay.fr/itm/234446609806?mk ... olid=10050
DesSony, you can use a DIL ribbon connector, to export the ZIF socket ?
https://www.ebay.com/itm/361985101589
and
https://www.ebay.fr/itm/234446609806?mk ... olid=10050
Last edited by XavSnap on Wed Oct 12, 2022 11:13 pm, edited 1 time in total.
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Hi DesSony, just tell me your whishes,
I am making a Version where the ROM is above the Zeddy Case so it fits the Zeddy better with a zif socket.
Paul,
I got it! I understand that you meant "wishes". BINGO!
1) Give it around 25.4 mm or 1 inch longer between where an edge connector and EPROM/EEPROM socket area are.
2) And ensure that a 7805's pins area is 5 millimeters closer to the R3 Screenprint area because of a DC/DC converter's height.
3) Aries' low-profile ZIF 28 pins socket is encouraged for testing purposes. and a machine-tooled 28 pins socket is for a permanent installation.
4) Slightly enlarge the size of the edge connector's holes for ease of putting the new edge connector onto the board without a struggle.
5) Mark the board as the 1.11 version.
Thank you very much in advance.
Regards,
DesSony
I am making a Version where the ROM is above the Zeddy Case so it fits the Zeddy better with a zif socket.
Paul,
I got it! I understand that you meant "wishes". BINGO!
1) Give it around 25.4 mm or 1 inch longer between where an edge connector and EPROM/EEPROM socket area are.
2) And ensure that a 7805's pins area is 5 millimeters closer to the R3 Screenprint area because of a DC/DC converter's height.
3) Aries' low-profile ZIF 28 pins socket is encouraged for testing purposes. and a machine-tooled 28 pins socket is for a permanent installation.
4) Slightly enlarge the size of the edge connector's holes for ease of putting the new edge connector onto the board without a struggle.
5) Mark the board as the 1.11 version.
Thank you very much in advance.
Regards,
DesSony
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Hello everybody,
The board works!
I want to post a resulting video file here. How do I do it? YouTube? Dropbox? Whatever?
Thank you very much in advance.
Regards,
DesSony
The board works!
I want to post a resulting video file here. How do I do it? YouTube? Dropbox? Whatever?
Thank you very much in advance.
Regards,
DesSony
- 1024MAK
- Posts: 5118
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Link (URL) to YouTube is the most common.
Unless the administrators change or have changed the relevant forum settings, embedded videos such as on YouTube using flash tags cannot currently be done.
Mark
Unless the administrators change or have changed the relevant forum settings, embedded videos such as on YouTube using flash tags cannot currently be done.
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Hello 1024MAK and the rest of you,
Here is the resulting video link!
https://youtu.be/ADPGdyKzrew
Please tell the forum about your opinion on the board.
Thank you very much in advance.
Cheers,
DesSony
Here is the resulting video link!
https://youtu.be/ADPGdyKzrew
Please tell the forum about your opinion on the board.
Thank you very much in advance.
Cheers,
DesSony
Re: Need help reverse engineering Timex Store Demonstrator ROM file
Hi,
DesSony's DemoStore card is ready.
Demo demonstrator release 2:
1) Low mussel desing.
2) High building concept.
3) Anti-seismic foots.
4) Anti-printer connector.
5) An original name "StoreDemo_V2".
6)... and many other stuff and errors.
Gerber files:
http://zx81.ordi5.free.fr/CartesZx81/Ti ... onstrator/
DesSony's DemoStore card is ready.
Demo demonstrator release 2:
1) Low mussel desing.
2) High building concept.
3) Anti-seismic foots.
4) Anti-printer connector.
5) An original name "StoreDemo_V2".
6)... and many other stuff and errors.
Gerber files:
http://zx81.ordi5.free.fr/CartesZx81/Ti ... onstrator/
Xavier ...on the Facebook groupe : "Zx81 France"(fr)