From a45ea32b4ffd3f5aa04aabaac810e89a35916a3f Mon Sep 17 00:00:00 2001 From: Thomas Jarosch Date: Fri, 24 Sep 2010 16:22:48 +0200 Subject: [PATCH] Document the magic 0x02 0x03 0x01 value after the serial string --- doc/EEPROM-structure | 15 ++++++++++++--- 1 files changed, 12 insertions(+), 3 deletions(-) diff --git a/doc/EEPROM-structure b/doc/EEPROM-structure index 09c3e45..97fd6d0 100644 --- a/doc/EEPROM-structure +++ b/doc/EEPROM-structure @@ -92,6 +92,15 @@ CHIP values: 1a UA (all) -Mprog doesn's seem to write this: -After last string -0x02 0x03 0x01 with PnP == 0 + +Additional fields after the serial string: +One byte: 0 - reserved for "legacy port name prefix" +One byte: 0 - reserved for "legacy port name prefix" +One byte: 0 - reserved for plug and play options +(Observed values with PnP == 0: +0x02 0x03 0x01) + +Note: The additional fields after the serial number string +collide with the official FTDI formula from AN_121 regarding +the start of the user area: +"Start Address = the address following the last byte of SerialNumber string." -- 1.7.1