In August 2021 i released the first version of the BPROM-Read-Adapter...which supported reading 14 different bproms with your programmer. You can read about it here.
As some boards from Funworld use the extremely rare CY7C291 bproms in PLCC28 package, i reworked the complete adapter-design and added support for it too. Previously i always had to handsolder the CY7C291 to something useful for reading it with a programmer.
In the end i added the following devices to the new design: CY7C261, CY7C263, CY7C264, CY7C291, 2564, 2532 and 2516.
The CY7C*-devices are even supported as PLCC28- and DIP24-package!
So the new adapter support's READING the following 21 devices (Of course it also supports the equivalent BPROM's from other company's like the 24S10 or 74S287 for the 82S129):
- 82S123 (32 byte)
- 82S129 (256 byte)
- 82S131 (512 byte)
- 82S135 (256 byte)
- 82S137 (1 kbyte)
- 82S141 (512 byte)
- 82S147 (512 byte)
- 82S181 (1 kbyte)
- 82S185 (2 kbyte)
- 82S191 (2 kbyte)
- 82S195 (4 kbyte)
- 82S321 (4 kbyte)
- 82S641 (8 kbyte)
- 2708 (1 kbyte)
- CY7C261 (8 kbyte)
- CY7C263 (8 kbyte)
- CY7C264 (8 kbyte)
- CY7C291 (only 2 kbyte! - so split the 8kb dump into four 2kbyte pieces!)
- 2564 (8 kbyte)
- 2532 (only 4 kbyte! - so split the 8kb dump into two halves!)
- 2516 (only 2 kbyte! - so split the 8kb dump into four 2kbyte pieces!)
All BPROM's can get read as 2716, 2732 or 2764 (see the markings on the adapters) which should be supported by any programmer.
For
reading 2708 eproms, you will need an external power-supply, which
get's the needed +12V and -5V...just connect it to the adapter, read
it as 2716 and split the dump afterwards into two halves.
Reading the BPROM's as 2716 will give you a 2kb file. Split the file to the correct sizes of the BPROM (The size of the BPROM is written above at the list of supported BPROM's) and you will get your correct dump of the bprom! (example 82s123: Split the 2kb file in pieces of 32byte each. All pieces should have the same CRC. Enjoy your BPROM-dump!)
If your programmer supports a "PIN-Check" before dumping you can have "1 Missing Pin" on some of the BPROM's. That's OK, don't worry ;-) !
Needed parts:
- 8 pcs 40 Pin 1x40 Male 2.54 Breakable Pin Header
- 3 pcs 1P2T Toggle Switch
- 2 pcs DIP16 IC Socket
- 1 pcs DIP18 IC Socket
- 3 pcs DIP20 IC Socket
- 2 pcs DIP24 IC Socket
- 2 pcs DIP24 IC Socket (wide)
- 2 pcs DIP28 IC Socket (wide)
- 1 pcs PLCC28 to DIP28 Adapter.
- 2pcs 12pin single row female Pin Header.
- PCB Files: You can order the boards here.
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