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A2058 Memory Expansion Card
There aren't many information about this card. It was sold with 2/4/8 MB of 16 bit RAM filling up all the memory address space of Zorro II bus. The card is a full ZII format. The timestamp of the manual says 1988: this is probably the year of production of the card.
The amount of memory is configured through 2 jumpers (J1 and J2) that you can find almost over the Zorro II connector.
| J1 | J2 | Memory Size |
| Closed | Closed | 2 MegaBytes |
| Closed | Open | 4 MegaBytes |
| Open | Open | 8 MegaBytes |
| Open | Closed | Auto-Config Disabled* |
*When the A2058's auto-config hardware is disabled, the board can be automatically configured indipendently of the Amiga OS. This is a board diagnostic mode only.
Here you will find a link to the original A2058 disk provided with the card. It only contained a memory test program.
More information will be added later.
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