@6263.adf (Lastest version, 07/02/95) Sorry, but my ISP is the limiting factor here. Rename A6263.txt to @6263.adf.
This version seems to be an advanced version of the 1070. Note the much reduced chip count.
J1, J4 Two pin headers
IDE in an IML Machine?
Well, sort of. The IDE controller can only be installed in a non-IML machine, such as the 8580, or a 90/95/85 with Flash BIOS. If you have a Type 1 upgrade DX2-66 complex OR a Type 4 complex, OR a 9585 then you can use this controller and IDE drives. I installed an AC-1070 and hooked up a WD-AC2420 drive in my 9590-OPT....
System Partition on IDE?
Start Up Sequence
AC-1070 with IBM SCSI Adapters under W95
W95 and the AC-1070
More to come. I must get my 9590 back up to install W95 on an IDE drive....
Which version of the BIOS supports CD Roms?
Hi Tim !
>The .ADF for the Arco makes NO reference to the IRQ used (if any). Now this could mean that it's hard-wired to IRQ14 (as is the onboard ESDI), or that it is I/O polled.
It seems to be used in PIO mode. If it were using any IRQ it should have the INT mentioned under "fixedressources" as have the IBM MCA SCSI controllers like in the below example:
The ARCO also uses 16 I/O adresses on 2510h to 251Fh (alternatively: 2520h - 252Fh), which is pretty unfamiliar. Usually the IDE adapters uses 8 I/O ports in the 1F0h - 1F7h (170h - 177h secondary) as data-port and 3F6h (376h secondary) as control-/ status port. And IRQ 0Eh (0Fh) as interrupt.
So the Arco is anything but not a standard IDE-controller anyway. I think it is best used under DOS/Win3.x or (probably) OS/2 ... not recommended for Win95 / 98 / NT - as usual.
The ROM-BIOS -by the way- can be set to disabled in the Setup. Will continue the quest on Thursday ...
Max Drive Size
The ARCO may not see the 2.5(doubtful) It does have an EIDE limit of 2.1GB accordingly and also supports internal EIDE CD-Roms(for 5.25 inch bay units). But the it has its own Drive table settings on the card. Most likely when you preformatted the drive on a different computer the Cyls/Hds/S-T are different than what the BIOS on the card is going to see
The AC-1070 controller's adapter BIOS supports IDE drives up to 2 Gb. If a drive was partitioned and formatted to a higher capacity, the controller will not permit the drive to operate under that partitioning scheme.
My question- will it allow multiple 2.1 GB partitions?
ATAPI CDROM Support
The @6263.adf, dated 07/02/95 has a section for CD Rom support.
ATAPI CDROM Installation
Adapter Memory Location DC00, D800, D400, D000, CC00, C800, or ROM DISABLE.
IO Address 2510-251F or 2520-252F
Slave Drive ATA Device, ATAPI Device or Not Installed. Necessary to support ATAPI device (CDROM) that is connected to the system as slave drive