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The Adaptec ACB-2070 has been tested with many of today's leading MFM and RLL drives. It has drive tables for the most commonly used drives. These table reside in the BIOS EPROM.
Small Image of ACB-2070
DownloadsDocumentationTechnical Specifications
No drivers are currently available for this product from Adaptec.
There are a few possible reasons for this:

- The product is supported by embedded drivers that are available in the supported operating systems.

- The product is supported by drivers that are embedded in the product.

- The product was recently introduced and there are no new drivers available.

obsolete product info (html 69 kb)
Product Documentation
Install Guide for the ACB 2070 (PDF 754 KB)
System Requirements
The ACB-2070A can be installed in any IBM PC/XT or equivalent IBM compatible computer with:One 5 1/4" floppy diskette driveOne available system expansion slotRoom for one 5 1/4" or 3 1/2" Winchester (hard) disk driveExternal power supply or power booster20-pin and 34-pin flat ribbon cables to connect the drive to the controllerIBM PC/XT DOS version 2.0 or newer revisions

The ACB-2070A Features

Fully IBM hardware compatible
Operates with all IBM PC/XT DOS hard disk drivers and applications
Provides approximately 50% more hard disk capacity by using Run Length Limited (RLL) coding
Controls both 5 1/4" and 3 1/2" ST-506 type Winchester disk drives
On-board primary format utility
On-board Adaptec copyrighted BIOS
3 to 1 interleaving of the disk
User-defined drive parameters
Large disk (logical) partitioning
Auto-configuration of the drive
Four standard drive tables in BIOS
Hard sector removable drive support
Adaptec defect handling
Support of 2 ST506 type drives
Support of wedge servo drives such as Quantum, Syquest, Microscience Int'l and Tulin
13 microsecond high performance seek step rate
Support of drives with up to 16 heads and 1024 cylinders
Power-on diagnostics and self diagnostics for controller self-checking
Seek and data check recovery

Operating Characteristics

0°C to 55°C (32°F to 131"F)
10% to 95% non-condensing relative humidity
Altitude-feet: Sea Level to 10,000

Storage Characteristics

-40°C to 75°C (-40°F to 167°F)
Altitude-feet: Sea Level to 20,000

MTBF (mean time between failures, Bellcore)

20,000 POH @ 55 C