What is USB BDM?

[usbbdm]

USB BDM is a spare time project which I created when I wanted to do some study on Motorola MC68331 CPU.
The information I got on the webs were all parallel port with Linux support. The circuit seems quite simple but I found it hard to use. What I needed is Windows based and run relative fast. I also wanted to be able to program the flash chip.
I end up build a USB based BDM which runs on any USB 1.1 capable Windows machine. At current stage, the software is command based and has been only tested under Windows XP. I think it should run under Windows 2000 as well. But not sure if Windows 98/Me have any problem.
Here are some data of the USB BDM.
Read memory speed at bout 29KB/s.
Write memory speed at about 40KB/s
Program several flash chips. It downloads the "burning" program to target memory and uses the target CPU to program, which is really fast.
Here is a link that gives you some knowledge of BDM on MC60xxx. cmp.felk.cvut.cz/~pisa/m683xx/bdm_driver.html

[usbbdm]

Find some other similar USB BDM products.
www.bdmtools.com/bdm-usb.htm
and
www.macraigor.com/usbDemon.htm

[adrianbv6]

can u explain please what this values stand for
D0
D1
D2
D3
D4
D5
D7
A0
A1
A3
A4
A5
A6
A7

RPC
PCC
SR
USP i got all FFFFF on one board and i cant set it to waht i want everytime i unplug box is gone back to FFFF
SSP
SFC
DFC
ATEMP
FAR
VBR

THANX

[usbbdm]

adrianbv6 said:

can u explain please what this values stand for
D0
D1
D2
D3
D4
D5
D7
A0
A1
A3
A4
A5
A6
A7

RPC
PCC
SR
USP i got all FFFFF on one board and i cant set it to waht i want everytime i unplug box is gone back to FFFF
SSP
SFC
DFC
ATEMP
FAR
VBR

THANX

These are registers of Motorola CPU.