first i also had..!! problems flashing some types of eproms like 010 4001 1001 infact most eproms and sensative to time chips etc etc ... bla bla bla yakiti yakit yak...
i have cured this over any machine,,,
and every chip ive tried so far{about 300} flashed just fine
i notice they make a new programmer and call it !hi speed 480mbps this gave me a big clue
in my bios is an adjustment for the usb controller it says hispeed 480 mbps or full speed 12mbps
i set it to full speed mode {12mpbs}{usb 1.1 speed}
this cured the problems with write underuns completely !!!! ive tried as big a 4mb eproms with no problems reported
and i think is a problem many people have with this programmer and other top types
but man i spent i think 50 quid on this top2049 and now im glad i did!!!!!!
i hope i helped another with this info
i think is common to any usb enabled top programmer and for that matter some others
480mbps is far to fast to maintain a good latency for programming in RT
and the buffer in the top is too small or something to cope i think there later model will be better for this
i uninstalled all previous versions of top and deleted all there older exe files
i installed the latest software from h**p://www.top2048.com {click the english flag}
now i shut down my PC {xp asus p5b motherboard duo core mpu 1gb ram} when i rebooted i followed the rules to replace the usb drivers youll find a text in the documents section of the above site yipEEEE !!! it works atlast
and i was fuming for ages ... now im happy...
infact the higher speed usb with the top connected was causing instability problems if i unpluged it sometimes the machine would just restart or blue screen now its fine also ...!!!
and i am little sad becouse my laptop has no such settings for the usb controller perhaps a quick email to toshiba will end my misery with it
it would be nice to use the programmer with the laptop but not essential at least the dam thing works now as i need it for eproms for sure !!!
i just find it incredulious that any company fail fully to point this out to there customers in big bold writing so many complaining people i read over the post of
for something so simple in the end..!!
machine toshiba equium laptop usb only type p5b asus main machine thinking of adding dual lpt pci card both used for top and lpt via usb where i can
old p2 programming grumbling tank with xp sp3 for true serial and lpt
all machines bios set to enable bios plug and play aware o/s and lpt spollers services and drivers removed legacy detection enabled
This is a workaround. It is a short term solution. The problem still exist in the programmer/software itself. Also, this workarond is only proved by your testing.
But more users need a true fix and a good technical support from manufactuer.
its miss use of directives in the driver jungo windriver.sys.
if you look at there code with a usb analyser, youll see the string to set the usb typing isnt addressed, so the driver simply hammers along at full speed until you limit it at port level.
the programmer runs perfectly once you lower the speed
i write c++ for usb and i can assure you there is a problem with other than there software and programmers.
it is infact much like vista a jungo's windriver issue
hacking there usb protocal is a good idea and reading other topics ill offer to lend a hand and write into one of the freeware front ends
i have lots of experience with hid devices like programmers and its easy as a simple dll based hid class and interface to the front end or use visual basic and rewrite it
however i hope they read this forum and see this issue im sure they will want to fix there driver to set the speed of the usb right
but your way wrong the programmers have no actual faults in there design
im around 40 years old and some of the ic's ive programmed now with it are older then me!!!!
i speek enough mandrin to communicate ok what im finding
and ill phone them later this evening when china wakes up and talk nicely to there software engineer lets hope they have some english also
im sure ill get a better solution for us all this way as contact via email seems hard
im also going to scan www.top2048.com and see what email boxes it has using a network tool i have
machine toshiba equium laptop usb only type p5b asus main machine thinking of adding dual lpt pci card both used for top and lpt via usb where i can
old p2 programming grumbling tank with xp sp3 for true serial and lpt
all machines bios set to enable bios plug and play aware o/s and lpt spollers services and drivers removed legacy detection enabled
i will post nmos chip completed writes if its helpfull
my advice and i asked my pal for one of his three units
is to use a windows me or 98 osr2 laptop to use flash
that has generic usb1
as top claim to not support usbs speeds {480mbps} till 3.xx series
yes im defending them
1} becouse now for me and others im sure it works 2} becouse i like the style of this unit 3} it does exact what it says it can!!!
can if you use it right
i would rather dedicate 1 usb controller to usb1 speed after all most mainboards have two controllers and just force one by using a 1.1hub to run at 12mbps
and the other for usb2
afterall its prob better as many devices work better at usb1 speeds i have
and usb 2 is too new to expect programmers of complex programmers to take onboard after all its 3 years old now
i would say get a life better to get an old usb1 laptop for flashing stuff
people with these are all laughting at you !!!! and most will say nothing
i didnt have to post here!!!
machine toshiba equium laptop usb only type p5b asus main machine thinking of adding dual lpt pci card both used for top and lpt via usb where i can
old p2 programming grumbling tank with xp sp3 for true serial and lpt
all machines bios set to enable bios plug and play aware o/s and lpt spollers services and drivers removed legacy detection enabled
READ THIS IF YOU OWN TOP2.X USB PRGRMR
Forum Locked
Posted - 06/08/2009 : 04:16:47
