... fjmem etc. ...
jtag> peek 0
URJ_BUS_READ(0x00000000) = 0xFFFF (65535)
jtag> peek 0x10
URJ_BUS_READ(0x00000010) = 0x5599 (21913)
jtag> help poke
Usage: poke ADDR VAL [ADDR VAL] ...
Write a single word (bus width size).

ADDR       address to write
VAL        value to write

ADDR and VAL could be in decimal or hexadecimal (prefixed with 0x) form.

jtag> poke 0 0x1234
jtag> peek 0
URJ_BUS_READ(0x00000000) = 0xFFFF (65535)
jtag> poke 0x10 0xffff
jtag> peek 0x10
URJ_BUS_READ(0x00000010) = 0x5599 (21913)
jtag> help detectflash
Usage: detectflash ADDRESS
Detect flash memory type connected to a part.

ADDRESS    Base address for memory region
jtag> unlockflash 0 1
Manufacturer: Intel
Chip: 28F256J3A

Unlocking 1 Flash block from address 0x0
(100% Completed) FLASH Block 0 : unlocking ... Ok.

Unlocking Completed.
jtag> peek 0
URJ_BUS_READ(0x00000000) = 0x0080 (128)
jtag> peek 0x10
URJ_BUS_READ(0x00000010) = 0x0080 (128)
jtag>