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2 expansions found
A2090A
AutoBoot-Karte
A2090A
Company
Commodore, USA
Date
1988
Amiga
A2000, A3000, A4000
Interface
Zorro II
Autoconfig ID
514 / 1
515 / 3
SCSI and ST-506 controller
supports seven SCSI and two ST-506 devices at once
the SCSI drives are controlled by the WD 33C93 IC
the ST-506 drives are controlled by the Zilog Z80B CPU
the 33C93 chip can be controlled by either the 68000 (default) or by the Z80
DMA transfers are provided by the custom Commodore 8727 IC featuring a 64 byte FIFO buffer
the Z80 CPU has 2 kB RAM to buffer commands from the Amiga, 8 kB PROM with driver routines and 1 kB RAM for storage of variables
three autoboot ROMs
custom bootblock design
does not support the SCSI Direct protocol
does not support partitions and drives larger than 256 MB
the ST-506 interface does not support 16-head drives
50 pin internal SCSI connector
DB25 external connector
hard disk activity LED connector
on Zorro III machines the card only works if the driver and all the buffers are loaded into chip RAM
A-Max II driver (hddisk.amhd)
hard disk kits
the A2090A was sold in kit form which included the controller itself, a hard disk, cables, installation disk and manual
A2092: A2090A bundled with a 20 MB Miniscribe 8425 hard disk
A2094: A2090A bundled with a 45 MB Toshiba MK-134FA or a 46 MB Rodime RO-3055 hard disk
all of these hard disks are ST-506 drives
Photos
front side
front side
back side
Driver / Installation Disk
2090a.dms
Installer's Heaven
A2090A install disk
346 kB
A2090A-Miniscribe8425.dms
A2092 install disk, mountlist for Miniscribe HD
337 kB
A2090A-RodimeRO3055.dms
A2094 install disk, mountlist for Rodime HD
337 kB
A2090A-ToshibaMK134FA.dms
A2094 install disk, mountlist for Toshiba HD
338 kB
AutoBoot-Karte
Company
Combitec, Germany
Date
1989
Amiga
A2000, A3000, A4000
Interface
Zorro II
autobooter
provides autoboot functionality for the
Commodore A2090
SCSI controller
two autoboot ROMs
autoboots with Kickstart 1.2 and 1.3
supports FastFileSystem
replaces the drive request procedure of the A2090 - no 8 seconds wait for drives to show up
checks for bootable drives in the following order:
1st ST506 drive
2nd ST506 drive
1st SCSI drive
2nd to 7th SCSI drive
can be disabled with jumper or by holding the right mouse button during startup
works with the A2090A (if A2090A autoboot ROMs are removed)
Photos
front side
back side
Manual
Combitec_AutoBoot-Karte.pdf
user manual (german)
185 kB
Driver / Installation Disk
Combitec_AutoBoot-10.dms
install disk
342 kB
Vintage Advert
Advert (DE)
1989-08
Advert (DE)
1989-10