Uploaded January 2025 | Updated September 2026, 2 weeks ago
Thanks to pcbway.com for sponsoring this video
Get the boards here: pcbway.com/project/shareproject/EPROM_Booster_Program_Higher_voltage_Vintage_Eproms_on_your_XGECU_T48_866ii_353885a0.html
The cheaper XGECU Programmers are not capable of programming EPROMS at higher voltages. Even when you try to apply 25v, it often only puts out 21v. This board allows you to decouple the VPP from the programmer and supply external voltage. NOTE: On most Eproms, you will be binding ground to VSS.
Requires
6 @ 16 pin 2.54mm Male Pin headers - standard dupont (amzn.to/3Eayc8Zl)
1 @ 8 pin 2.54mm Male Pin Header - standard dupont
2 @ 16 pin 2.54 Male-Male Socket Pinheaders - round not square (amzn.to/3CfpJ3Q)
1 @ 32 pin Socket or Zif socket (usually 28 pins is plenty for these eproms) (amzn.to/4h93jAf)
32 @ 2.54mm jumpers (amzn.to/4av3hjP)
Optional
Dupont gators - amzn.to/3E70Gk2
Dupont female - amzn.to/4hwf97n
Programmers -
T48 with no adapters
amzn.to/3pP7RpF
T48 with some adapters
amzn.to/3Coo4sC
T48 with many adapters
amzn.to/4jtLL3v
The T56 has been replaced with the T76
amzn.to/4h9Coo5
Videos I mentioned
Eprom Programmer Comparison
youtu.be/42VCmOVWAyc
Learn Kicad in 45 Minutes
youtu.be/SFJRHFMOhQA
Necroware's video
youtube.com/watch?v=VwxCpSt-3RQ
If you're interested in getting pcbs, using this link pcbway.com/setinvite.aspx?inviteid=446230 for my friends over at PCBWay.com is a huge help to the channel.
Thanks to pcbway.com for sponsoring this video
Get the boards here: pcbway.com/project/shareproject/EPROM_Booster_Program_Higher_voltage_Vintage_Eproms_on_your_XGECU_T48_866ii_353885a0.html
The cheaper XGECU Programmers are not capable of programming EPROMS at higher voltages. Even when you try to apply 25v, it often only puts out 21v. This board allows you to decouple the VPP from the programmer and supply external voltage. NOTE: On most Eproms, you will be binding ground to VSS.
Requires
6 @ 16 pin 2.54mm Male Pin headers - standard dupont (amzn.to/3Eayc8Zl)
1 @ 8 pin 2.54mm Male Pin Header - standard dupont
2 @ 16 pin 2.54 Male-Male Socket Pinheaders - round not square (amzn.to/3CfpJ3Q)
1 @ 32 pin Socket or Zif socket (usually 28 pins is plenty for these eproms) (amzn.to/4h93jAf)
32 @ 2.54mm jumpers (amzn.to/4av3hjP)
Optional
Dupont gators - amzn.to/3E70Gk2
Dupont female - amzn.to/4hwf97n
Programmers -
T48 with no adapters
amzn.to/3pP7RpF
T48 with some adapters
amzn.to/3Coo4sC
T48 with many adapters
amzn.to/4jtLL3v
The T56 has been replaced with the T76
amzn.to/4h9Coo5
Videos I mentioned
Eprom Programmer Comparison
youtu.be/42VCmOVWAyc
Learn Kicad in 45 Minutes
youtu.be/SFJRHFMOhQA
Necroware's video
youtube.com/watch?v=VwxCpSt-3RQ
If you're interested in getting pcbs, using this link pcbway.com/setinvite.aspx?inviteid=446230 for my friends over at PCBWay.com is a huge help to the channel.
