14 Feb
2019
14 Feb
'19
9:36 a.m.
On Wed, Feb 13, 2019 at 5:39 PM Chris Hanson via cctalk <
cctalk at classiccmp.org> wrote:
Does anyone have documentation stashed away for the
Intel PC-BUBBLE Card?
The PC-BUBBLE is an 8-bit ISA card that Intel produced for prototyping
bubble memory applications in the mid-1980s, the ROM on mine is v3.0 and
says it?s copyright 1986.
I don?t want to insert this into a system until I?m sure all the (many)
jumpers are configured reasonably, and I?m sure that the empty 40-pin
socket at U5 isn?t something that?s critical to its operation?
Is there a 40-pin chip elsewhere? There should be one 40-pin chip, which is
the Bubble Memory Controller (BMC). That's a D7220 for 1Mbit bubble devices
(7110), or a D7225 for 4Mbit bubble devices (7114).