CF7+ power supply

[+OLD CS1]

Can anyone confirm that a missing CF card gets you to a blue screen? I was sure that the CF7+ firmware was in ROM, and not something you loaded onto the card itself. If that's the case, I will likely start a new thread to help me trouble shoot the device.

 

Confirmed. I doubt the firmware is on the card considering you can a swap cards on a whim, which I do. It seems to me the firmware just locks up or stops when it cannot detect the CF. This is the case without the CF or adapter in place.

[Opry99er]

Thank you! There is hope yet then.

[+Torrax]

CF7+ (32K/Parallel Port) using 7.5V, 1300mA Universal Power supply.

 

 

[+OLD CS1]

I cannot tell from the picture, but is that a 9805 or a 7805 regulator on that? It makes sense that a board with a 7805 would need a 7v power supply as the recommendation to drive it at 20% above the regulated voltage (which is at least 6v.)

[+Lee Stewart]

I cannot tell from the picture, but is that a 9805 or a 7805 regulator on that? It makes sense that a board with a 7805 would need a 7v power supply as the recommendation to drive it at 20% above the regulated voltage (which is at least 6v.)

 

Looks like a 9805 to me.

 

...lee

[+Torrax]

It's very hard to read with my glasses on, as the print is very light. From checking at various angles it looks like it says LM7805C. I got the CF7+ power adapter info from Jamie when I ordered it back then.

 

Also under the angled CF connector is a TI chip 2701EK, SN74HC00N. Is the 32K in the XILINX chip??

 

How many different CF+ versions do we have now?

Edited March 23, 2018 by Torrax

[+Torrax]

The 32K is under the chip labeled CF7+ (An EPROM stacked on top of a SRAM chip). This is the first time I pulled the CF adapter off and had a good look at the board under it.

Edited March 23, 2018 by Torrax

[+Schmitzi]

It's very hard to read with my glasses on, as the print is very light. From checking at various angles it looks like it says LM7805C. I got the CF7+ power adapter info from Jamie when I ordered it back then.

 

Also under the angled CF connector is a TI chip 2701EK, SN74HC00N. Is the 32K in the XILINX chip??

 

How many different CF+ versions do we have now?

 

 

I have collected this informations about different models:

 

PEBs:

 

 

 

Power:

 

[+Lee Stewart]

It's very hard to read with my glasses on, as the print is very light. From checking at various angles it looks like it says LM7805C.

 

I defer to your advantage of direct observation, but I must say that, in a sharpened image of your post, the first digit appears to have the circular top a ‘9’ would have.

 

...lee

[+Torrax]

It is definately a LM7805C regulator. I rechecked it during the daylight hours earlier today.

Edited March 24, 2018 by Torrax

[+Schmitzi]

uhhh really ? OK.