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Lucas |
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Company
Anakin Research, Canada | | Date
1988 | | Amiga
A1000
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68000 socket
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- Little Ugly Cheap Accelerator System
- a public domain hardware hackers project, designed by Brad Fowles of Anakin Research
- sold as a kit (only the PCB, programmed PALs and how to build documentation) all other parts (CPU, FPU, RAM, capacitors, diodes, sockets, etc.) had to be purchased separately
- it did not fill the RFC rules so it was not possible to sell it all in one
processor
- 68020 @ 12 - 20 MHz
- 68881 or 68882 @ 12 - 20 MHz
- the first asynchronously clocked 68020 board
- originally designed for 16 MHz
- could be upgraded to 68030 using an adaptor board but the data caches are not supported (so no significant speed increase is possible)
optional memory board - Frances
- Fast Ram At Nominal Cost for Expanded Storage
- 32 DIP sockets accept up to 4 MB RAM
- possible configurations are 1, 2, 3 or 4 MB with 256k×4, 80 - 100 ns DIPs
- 8421 DMA RAM controller chip
- interleave access
notes
- connects into the 68000 socket
- no 68000 fallback mode
- selectable wait states
- has to be fine tuned for specific A1000s (differnet timings) - this process is well documented
- very noisy design, does not like 3rd party hardware connected to the side expansion port
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