A590
| 
 Company 
Commodore, USA  | 
 Date 
1989  | 
 Amiga 
A500  | 
 Interface 
side expansion port  | 
 Autoconfig ID 
514 / 2,3,10  | 
DMA SCSI and XT IDE controller
- Western Digital 33C93
 - both SCSI and XT IDE mode can work simultaneously
 - autoboot ROM – autobooting requires at least Kickstart 1.3
 - autoboot disable switch
 - time-out switch for drives which spin up slower than 30 seconds
 - RDB compatible
 - 50 pin internal SCSI header
 - internal 40 pin XT IDE header (8 bit only)
 - DB25 external SCSI connector
 - supported by Linux
 - A-Max II driver (scsi.amhd)
 
memory
- sixteen DIP sockets accept 0.5, 1 or 2 MB RAM
 - needs 256k×4 DIPs, 120 ns or faster
 
notes
- place for a 3.5″ hard disk inside the case
 - hard disk activity LED – it can be toggled by jumper to show SCSI or XT-IDE activity
 - connects to the side expansion port, no passthrough connector
 - external power supply – turns on automatically when the A500 is powered up
 
DIP switch settings
| switch 1 – | autoboot ROM: ON – enable | 
| switch 2 – | LUN: ON – enable | 
| switch 3 – | time-out: ON – enable long wait period for drive | 
| switch 4 – | reserved | 
- Serial: 062870
 - no RAM installed
 - HDD: Seagate ST31055N
 - ROM version: ? [images]
 
- fully recapped with Rubycon brand 105° capacitors
 - worn our power cable repaired [contacts bent]
 - two spacers missing for two of the HDD screws
 















