Headland HT12/A 286 chipset: UMB driver?

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Headland HT12/A 286 chipset: UMB driver?

Postby keropi » 2017-5-14 @ 16:28

Hiya!

I have a couple 16mhz 286 motherboards with the Headland HT12/A chipset and I was wondering if there is a UMB driver for it.
I have tried "The Last Byte Manager" that provides up to 64kb of UMBs for the HT12 chipset but all it does is hard-lock both machines... :depressed:
Perhaps there is a HT12 chipset without the /A and that's why it doesn't work :confused:

The HT12MM.SYS EMS driver does work and provides EMS RAM but no UMBs. Is it even possible?
Here are some photos from the chipset, BIOS screen and TLB manager:

Image

Image

Image

and here is the MEM output with HT12MM.SYS loaded to provide EMS:

Image

Any ideas/tips?
TIA for any help/info! :blush:
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby dieymir » 2017-5-15 @ 10:24

Try disabling memory relocaton in BIOS setup. As last resort you can have UMBs using the generic EMS 4.0 support of TLBMM, QRAM or Invisible RAM. I have used all of them successfully with my 286 mainboard and a SUNTAC Chipset.
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby jesolo » 2017-5-15 @ 10:31

I have a 386SX PC with a Headland HT18 chipset, but have not been able to locate any EMS driver for it.
In the BIOS, there is an option to allocate some memory as EMS, so I'm assuming there must be a driver for it as well.
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby Jo22 » 2017-5-15 @ 21:49

Wait, there's an EMS driver ? I'm also having a Headland-based machine! Where can I find it ?
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby keropi » 2017-5-15 @ 22:07

I am attaching the HT12MM.SYS driver , it's the hardware EMS driver for the HT12 chipset, don't know if it will work with others

supposedly there is also a "ht12-umb.lzh" but noone seems to be able to locate it...
http://www.vcfed.org/forum/showthread.p ... MS-drivers
Attachments
ht12.zip
HEADLAND HT12 EMS Memory Manager
(10.83 KiB) Downloaded 27 times
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby Jo22 » 2017-5-15 @ 23:07

Thank you very much! ^^
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby keropi » 2017-5-18 @ 09:55

The solution was here all along :lol: according to this post:

With The Last Byte Memory Manager 2.11 version works the umb (i can get 62kb umb), only you should delete the frame=d000 options at the config.sys lastbyte.sys command line. The olny problem is the program is sharware (wait 30sec, works only 30days), and you couldn't use ems/umb at the same time (because the ems page frame uses as umb).


So I downloaded the older v2.11 version of TLB and it actually works! Apparently the latest v2.52 broke something - at least on the chipset program.

Image

DOS 6.22 cannot recognize the UMBs that TLB creates, programs do load fine though in that region but you have to use TLB's HIGHTSR loader, LH does not work:

Image

Image

Image

So unless that special HT12 UMB driver is found TLB is the only way that works and creates UMBs, at least on my systems.
Thanks everyone for their help!

edit:

turns out that the problematic part is the CHIPSET.EXE detection program that TLB v2.52 comes with... the driver is loading fine:

Image

this is the config.sys command for the HT12 chipset: DEVICE=C:\TLBMM\LASTBYTE.SYS Physical=HT12,NOEMS,OVERRIDE

doing a full install of TLB v2.52 with "INSTALL HT12" (so that chipset.exe that is problematic does not run) takes care of the UMB integration in DOS, MEM reports UMBs and LH works.
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby dr.zeissler » 2017-5-18 @ 10:33

Interesting, my TowerAT also had a HT Chipset, but no EMS was possible.
Someone told be that this chipset had no ems support.
CPU: PII 133-333 MOBO: SNI-D981 RAM: 512- FDD: Dualfloppy 3,5"HD/5,25"HD - 3,5"HD - 5,25"DD ISA-Catweasel HDD: 2x40GB - DVD
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby keropi » 2017-5-18 @ 10:57

HT12 has hardware EMS support, you set the size in BIOS and then use the driver I attached in a previous post.
EMS though won't give you UMBs, that's a different story and you need The Last Byte for that.
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby dr.zeissler » 2017-5-18 @ 11:00

my machine had no bios-support for ems.
CPU: PII 133-333 MOBO: SNI-D981 RAM: 512- FDD: Dualfloppy 3,5"HD/5,25"HD - 3,5"HD - 5,25"DD ISA-Catweasel HDD: 2x40GB - DVD
ISA(3): Audician32-S2Dreamblaster - GusACE PCI(3): Monster3D- Intel NW AGP(1): 3dfx V3-3000
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby keropi » 2017-5-18 @ 11:09

no idea what's the deal then... see my BIOS screen in the first post - both HT12 boards I own are the same
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby dr.zeissler » 2017-5-18 @ 11:14

my bios looks like this https://www.flickr.com/photos/pato4sen/8558776321/ (not my photo, not my machine, but identical to mine)
CPU: PII 133-333 MOBO: SNI-D981 RAM: 512- FDD: Dualfloppy 3,5"HD/5,25"HD - 3,5"HD - 5,25"DD ISA-Catweasel HDD: 2x40GB - DVD
ISA(3): Audician32-S2Dreamblaster - GusACE PCI(3): Monster3D- Intel NW AGP(1): 3dfx V3-3000
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby keropi » 2017-5-18 @ 11:16

what is this mention of "SETUP-RAM" at the bottom?
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby dr.zeissler » 2017-5-18 @ 11:23

That's only the "save bios-configuration" if you choose "enter"
CPU: PII 133-333 MOBO: SNI-D981 RAM: 512- FDD: Dualfloppy 3,5"HD/5,25"HD - 3,5"HD - 5,25"DD ISA-Catweasel HDD: 2x40GB - DVD
ISA(3): Audician32-S2Dreamblaster - GusACE PCI(3): Monster3D- Intel NW AGP(1): 3dfx V3-3000
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby keropi » 2017-5-18 @ 11:38

well is seems EMS function is disabled for some reason... no idea if there is a chance to work with any trick
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby derSammler » 2017-5-18 @ 16:50

dr.zeissler wrote:Interesting, my TowerAT also had a HT Chipset, but no EMS was possible.

The Tower AT does not have a HT12 chipset. It's using the GC102, but EMS is only supported with the GC103.
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Re: Headland HT12/A 286 chipset: UMB driver?

Postby dr.zeissler » 2017-5-18 @ 17:18

ah da war doch was, danke!
CPU: PII 133-333 MOBO: SNI-D981 RAM: 512- FDD: Dualfloppy 3,5"HD/5,25"HD - 3,5"HD - 5,25"DD ISA-Catweasel HDD: 2x40GB - DVD
ISA(3): Audician32-S2Dreamblaster - GusACE PCI(3): Monster3D- Intel NW AGP(1): 3dfx V3-3000
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