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- Newsgroups: comp.robotics
- Path: sparky!uunet!psinntp!dg-rtp!webo!kitkat!pmalenfa
- From: pmalenfa@kitkat.webo.dg.com (Paul Malenfant)
- Subject: Re: 6.270 Boards -- be careful before deciding
- Sender: usenet@webo.dg.com (Usenet Administration)
- Message-ID: <1993Jan20.223957.4621@webo.dg.com>
- Date: Wed, 20 Jan 93 22:39:57 GMT
- Reply-To: pmalenfa@kitkat.webo.dg.com (Paul Malenfant)
- References: <1993Jan17.075322.10766@magnus.acs.ohio-state.edu> <1jc2p1INN903@life.ai.mit.edu>
- Organization: Data General Corporation, Westboro, MA
- Keywords: control robot miniboard pcb 6.270
- Lines: 21
-
- In article <1jc2p1INN903@life.ai.mit.edu>, anarch@cookie-monster.ai.mit.edu (Anne R Wright) writes:
- |>
- |> All revisions of the 6.270 board that we have tested -- version
- |> 2.0, 2.1, and 2.2 -- all fail when using the Motorola 68HC11A1
- |> chips currently available. 6.270 has traditionally used A0 rather
- |> than A1 chips and they work fine. However, the new chips will
- |> frequently enter an illegal state on reset which causes the
- |> 6811 to corrupt its own memory.
-
- The corruption to which you refer is of the internal RAM, not the
- external, correct?
-
- When does the failure occur? Upon pressing reset?
-
- Does the reset function correctly, with the exception of RAM
- corruption?
-
- --
-
- Paul Malenfant
- pmalenfa @ kitkat.webo.dg.com (508-870-6460)
-