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lither
July 25th, 2004, 04:39 AM
I have a 8 bit SCSI controller selled by Nec.I recently try to hook a SCSI hardisk and fail. I check google and the manual and finally find that it is a ROM less version of the Trantor T130B. Fortunately , someone give me a bootrom image (trantor T130B). Here is the question : there are two empty sockets on the card . one is for the rom and the other one (20 pin) is not even mentioned on the manual.Could it work if i leave the small socket empty and just plug a EPROM only
i ask so because i have no EPROM burner and is going to invest one.

lither
July 26th, 2004, 08:08 AM
i found the answer. the empty socket is a PAL which is used to enable to rom. so it wont work.

Shadow Lord
July 2nd, 2019, 02:27 AM
Okay,

I am seriously necro-posting here but since this thread addresses my issue I decided against starting a new thread. I recently acquired and NEC CD-XT003 (i.e. Trantor T130B) in a lot of other cards. Unfortunately mine is missing the BIOS and the PAL chip.


Some assumptions here:

From reading the other threads it seems as if this card was designed mostly for CD operation (unless you are using a 286 or above system). My main goal is to use it on my Toshiba T3200SX for CD access (the Toshiba is 386-16sx system) so the card as it stands should work fine. It also seems to work ok for HDDs as long as you boot up off of another drive and load the appropriate drivers. The BIOS of course would be needed to boot off of a SCSI drive connected to the card.

Any of these incorrect so far?

While I am guessing I can get my hands on the BIOS and burn my own chip the real question is if anyone ever worked out the PAL chip? Chuck had mentioned (http://www.vcfed.org/forum/showthread.php?18561-Anyone-with-Trantor-T130B-SCSI-HBA-experience&p=123855#post123855) it in another thread but that it was also very low on his priority list. If I understand correctly without the PAL chip the BIOS is useless. TIA!

Chuck(G)
July 2nd, 2019, 08:10 AM
Yes, you need the PAL chip--take a look at my (13-part?) blog that I did some years ago. I show the cloning of a T130B PAL and probably include the equations for it. It does work.

The curious thing is that the 53C400 controller chip was designed to be an all-in-one affair, even decoding BIOS addresses, but Trantor decided to modify its operation such that it's I/O mapped instead of memory-mapped. They do that with PALs.

Shadow Lord
July 2nd, 2019, 09:57 AM
Chuck,

I should have known you had it already taken cared of it. :D

So would you buy any chance have the FW handy? I think 2.14 was the latest revision I saw referenced in the other threads. Thanks.

Chuck(G)
July 2nd, 2019, 10:17 AM
Mmm, I'll have to see. It's been a couple of years since I've fooled with any 8-bit SCSI controller.

Shadow Lord
July 2nd, 2019, 10:25 AM
Mmm, I'll have to see. It's been a couple of years since I've fooled with any 8-bit SCSI controller.

Thanks for checking. The problem with the Toshiba is that it has one 8-bit and on 16-bit expansion port. I am using the 16-bit for a 3C509B and the 8-bit slot needs to be used for the expansion box. However, while the expansion box adds five extra slots they are all 8-bit so I am limited as to what can be installed.

SomeGuy
July 2nd, 2019, 10:29 AM
There is a T130B ROM listed on the Minuszerodegrees misc ROMs page http://minuszerodegrees.net/rom/rom.htm

Chuck(G)
July 2nd, 2019, 10:31 AM
MZD has the 2.14 BIOS ROM here (http://minuszerodegrees.net/rom/bin/trantor_t130b_bios_v2.14.bin)

Shadow Lord
July 2nd, 2019, 10:34 AM
There is a T130B ROM listed on the Minuszerodegrees misc ROMs page http://minuszerodegrees.net/rom/rom.htm


MZD has the 2.14 BIOS ROM here

Thank you sirs! That fits the bill nicely!