On 2017-04-11 08:32, Johnny Billquist wrote:
On 2017-04-11 01:31, Richard wrote:
In article <c54a5796-bf95-06e4-9890-6d17259c0...@softjar.se>,
Johnny Billquist <b...@softjar.se> writes:
No. The VT330 and VT340 have an external cartridhe that plugs into a
slot in the back, and which holds most of the code.
You're describing this like there's a port on the external case of the
terminal for this, but I am not seeing that in the diagrams. It shows
on the engineering drawings as a connector on the rear side of the
CPU module.
Correct. There is a port on the external case.
<http://bitsavers.trailing-edge.com/pdf/dec/terminal/MP02411_VT330_EngrDrws_Feb87.pdf>
Am I missing something?
Yes. I don't know how you read schematics, but if you start with that
document, you have the ROM cartridge mentioned already on the first page.
Going to the CPU module, you have a huge connector called J3, which is
where the cartridge plugs in.
And then of course, you have the ROM cartridge drawing itself, starting
at page 25.
It's so clear in those schematics that I have no idea how you cannot see
it.
If all you are searching for is a picture where you see the external
slot, those drawings don't dhow it. The only picture of the rear shows
half the rear with the cover, and half without. The cartridge slot is
behind the part drawn with the cover.
Actually, if you go to page 46, you have a full picture of the rear.
Looking from left to right, you have a rectangle where the DB25 is, a
narrow, high rectangle which is the cartridge slot, then a place for a
label or whatever, and at the right end is the power receptacle.
Below this from left to right is a round hole where the mouse connector
is, followed by some squares where you have the MMJ and keyboard connectors.
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: b...@softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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