Amiga Hardware DatabaseCompany Commodore, USA | Date 1988 | Amiga A2000 | Interface CPU slot | Autoconfig ID 514 / 80 |
- processor
- 68020 @ 14 MHz, synchronous with the motherboard
- 68851 memory management unit
- factory installed 68881 @ 14 MHz, supports FPUs up to 68882 @ 25 MHz
- can be upgraded to 68030 with the Harms Professinal-Pack 030 board
- memory
- 2 or 4 MB 32 bit RAM
- 16 or 32 256k×4 page mode ZIPs 80-100 ns
- not expandable
- RAM can be disabled or autoconfigured by setting a jumper
- notes
- the first accelerator board for the A2000
- boot ROMs below rev 6 are incompatible with Kickstart 2.0 and above
- the ROM address space overlaps the upper 256 kB of the 512 kB Kickstart ROMs (Kickstart 1.3 is 256 kB only)
- by the time AmigaOS loads, the boot ROMs are supposed to be off but due to a bug in the A26x0 ROM code they remain active, causing an address space collision
- fitting a rev 6 or 7 ROM pair solves the problem
- some boards are reported being incompatible with the newer ROMs either
- in 68000 fallback mode the RAM is still available
front side
back side
- A2620_A2630_Addendum.pdf
Addendum to A2630 User's Guide and A2620 Installation Guide (english)
15 kB