From owner-freebsd-hackers Tue Jan 8 11:32:42 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by hub.freebsd.org (Postfix) with ESMTP id 8585F37B431 for ; Tue, 8 Jan 2002 11:32:25 -0800 (PST) Received: (from dillon@localhost) by apollo.backplane.com (8.11.6/8.9.1) id g08JWNF60649; Tue, 8 Jan 2002 11:32:23 -0800 (PST) (envelope-from dillon) Date: Tue, 8 Jan 2002 11:32:23 -0800 (PST) From: Matthew Dillon Message-Id: <200201081932.g08JWNF60649@apollo.backplane.com> To: Doug Rabson Cc: Subject: Re: Oh my god, Google has a USENET archive going back to 1981! References: Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG : :That brings back memories. We wrote our own firmware for the 1541 since :the commodore DOS was so slow. I forget what transfer rate we managed but :it was much better than the standard code. Bit of a sod to debug though. : :-- :Doug Rabson Mail: dfr@nlsystems.com : Phone: +44 20 8348 6160 Yup. Remember Bryce's 1541 Flash? He was working on beefing up the C64 serial link while I was working on beefing up the PET's (software driven) IEEE-488 link. We both managed to increase disk bandwidth by an order of magnitude, mainly by synchronizing the computer's 6502 with the peripheral's 65xx and then just stuffing data into the ports without bothering with any handshakes until the very end. That old usenet posting I posted has some references to it. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message