IDE on Qbus (was Re: Microvax II)

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Mon Oct 16 21:01:35 2000

From: Phil Budne <phil_at_ultimate.com>
>> Has anyone designed a quick-n-dirty Qbus IDE adapter?
>
>see ftp://digital.dp.ua/DEC/ata/


Knew someone would look. ;)

> ATA disk interface


See above.

> BOOT EPROM or Flash

MRV11 with what you need in eprom or MXV11
M8189 11/23 takes eproms on the cpu.

> Crystal CS8900 Ethernet

DELQA

> 512KW SRAM


MS11 memoriesare out there.

> SuperIO (ie; WinBond)
> or
> NS16550A (or eqiv high-speed, deep FIFO) UART for networking/kermit
> Floppy ctrlr (capable of driving Shugart 8", 5.25" 3")

Well the 16550 is basically a DZV-11, DHV11, that will get you a
bunch of lines good to 38kb

FDC for the mix if 3.5 or 5.25 is RQDX3, late rom.
5.25 is rx50(400k) and rx33(1.2m)
3.5 is rx23(1.44m) and rx24(720k)

8" is RX02/RX12. 256k/512k with 256k standard sssd 8"
media and formatting.


> ISA Bridge

Why bother.

Now if you wanted that all on a 8x9" board then I'd perk up my years.


Allison
Received on Mon Oct 16 2000 - 21:01:35 BST

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