More pin out info..

[judb]

Okay,

so Pin 46 on the Maverick goes to JP3.

This pin is labeled PE[1/0]BOOTSEL[1]
it is described as GPIO Port E / Boot Mode Select

Pin 155 on the Maverick goes to JP2
Pin 155 is labeled nMEDCHG/nBROM
it is described as media change interrupt input / internal ROM boot enable

JP1 pin 1 goes to pin 4 of the cd4011BCM
JP1 pin 2 goes to pin 21 of the Xilinx 5032 chip (labeled as I/O-B12
JP1 pin 3 goes to ground

CD4011BCM
Quad 2-Input NOR Buffered B Series Gate . Quad 2-Input NAND Buffered B Series Gate
http://www.alldatasheet.co.kr/datasheet-pdf/pdf_kor/FAIRCHILD/CD4011BCM.html

The output of the CD4011BCM on Pin 6 goes to Pin 40 on the Winbond W78E516BP-40 which is labeled AD3 - P03 (this is also connected to a resistor it appears labeled 273 I THINK!  its hard to read though...

[judb]

Lets discuss our thoughts on the alternate boot modes available using the jumpers.. any ideas?

[judb]

(JP5 Corrected, New PINS for JP8 )


JP5 -- XILINX 9572XL - JTAG
Pin 6   > 9572XL Pin 48 - TCLK
Pin 8   > 9572XL Pin 83 - TDO
Pin 10 > 9572XL Pin 45 - TDI
Pin 12 > 9572XL Pin 47 - TMS
 
JP6 -- ARM JTAG (No Connector, just pads)
Pin 3   > 7312 Pin 125 - nTRST
Pin 5   > 7312 Pin 11 - TDI
Pin 7   > 7312 Pin 58 - TMS
Pin 9   > 7312 Pin 90 - TCLK
Pin 11 > 7312 Pin 22 - TDO
 
JP8 -- ARM UART1 (SERIAL PORT!!!)
Pin 1 > board power
Pin 2 > pin18 - PB2 [GPIO port B]
Pin 3 > some resistor, hard to trace past.
Pin 5  > 7312 Pin 32 - TDX[1]
Pin 7  > 7312 Pin 36 - RXD[1]
Pin 9  > 7312 Pin 37 - DCD
Pin 11 > 7312 Pin 38 - DSR
Pin 13 > 7312 Pin 35 - CTS
 
JP9 -- XILINX 5032C - JTAG
Pin 6   > 5032C Pin 26 - TCLK
Pin 8   > 5032C Pin 32 - TDO
Pin 10 > 5032C Pin 1 - TDI
Pin 12 > 5032C Pin 7 - TMS

[judb]

http://www.cirrus.com/en/pubs/manual/ep73xx_um-f.pdf

User Guide

[sbingner]

well if we could get it to boot something else, or otherwise replace the firmware with one that dosnt check for signatures we'd be golden... all the files from phatnoise could still be used, but it wouldnt check for sigs... and any programs that did check could be re-written etc

Sam