Difference between revisions of "Minimig Expansion"
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! Bus !! Comment | ! Bus !! Comment | ||
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| − | |[http://en.wikipedia.org/wiki/Zorro_II ZorroII]|| 16bit direct cpu, autoconf | + | |[http://en.wikipedia.org/wiki/Zorro_II ZorroII]|| 16bit direct cpu, autoconf, busmaster |
|- | |- | ||
| − | |[http://en.wikipedia.org/wiki/ | + | |[http://en.wikipedia.org/wiki/Zorro_III ZorroIII]|| 32bit, multiplexed |
|- | |- | ||
|[http://en.wikipedia.org/wiki/Industry_Standard_Architecture ISA8]|| 8bit, dumb | |[http://en.wikipedia.org/wiki/Industry_Standard_Architecture ISA8]|| 8bit, dumb | ||
| Line 27: | Line 27: | ||
<br> | <br> | ||
Connect the Zorro bus bridge directly to the CPU bus<br> | Connect the Zorro bus bridge directly to the CPU bus<br> | ||
| − | + | <br> | |
| + | The Zorro bus IS the CPU bus.<br> | ||
| + | [http://pinouts.ru/Slots/Zorro_pinout.shtml ZorroII/III pinout]<br> | ||
| + | <br> | ||
== See also == | == See also == | ||
* [[Minimig Harddisc]] | * [[Minimig Harddisc]] | ||
| + | * [[Expansion bus]] | ||
Latest revision as of 14:22, 24 February 2024
| Bus | Comment |
|---|---|
| ZorroII | 16bit direct cpu, autoconf, busmaster |
| ZorroIII | 32bit, multiplexed |
| ISA8 | 8bit, dumb |
| ISA16 | 16bit |
| PCI | 32bit, autoconf |
| PCI-Express | serial lanes |
| USB | Options: Ethernet, Mass storage, Multimedia Vinculum Vmusic |
http://www.amiga.org/modules/newbb/viewtopic.php?topic_id=39358&forum=8&viewmode=flat&order=ASC&start=140
ATA (IDE), ZorroII, SCSI all wants a large number of I/O pins. There a currently 4 remaining. A few more possible by reusing boot configuration pins. Getting larger fpga means BGA and that is a path you don't want to go.
But fpgas are capable of really fast communications, esp the standard spartan3. So a possibility is to use the leftover I/O to connect another fpga to hookup these things. Essentially a "south bridge" running on a pseudo serial bus.
Not minding the cost of an extra fpga, special copper trace requirements, support circuitry, power, and connectors.
Connect the Zorro bus bridge directly to the CPU bus
The Zorro bus IS the CPU bus.
ZorroII/III pinout
