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- Path: comma.rhein.de!serpens!not-for-mail
- From: mlelstv@serpens.rhein.de (Michael van Elst)
- Newsgroups: comp.sys.amiga.misc
- Subject: Re: Walker = 1970's 8-Track Player
- Date: 20 Mar 1996 23:54:20 +0100
- Organization: dis-
- Message-ID: <4iq2as$hhf@serpens.rhein.de>
- References: <4imtue$7ok@serpens.rhein.de> <DoKtxy.A2B@cix.compulink.co.uk>
- NNTP-Posting-Host: serpens.rhein.de
-
- jralph@cix.compulink.co.uk ("Jolyon Ralph") writes:
-
- >> quickly). Most games followed the C= guide line of loop until RDY is
- >> asserted, this means that they will read immediately the motor is
- >> turned on.
-
- Most games just look at the RDY line, this is different from the C=
- guide lines that require a 0.5s timeout. Have a look at the hardware
- reference manual.
-
- It also means that on drives without RDY signal the trackloaders just
- wait infinitely. They do not start to read at all.
- On drives with RDY they behave just like the operating system (assuming
- that the RDY signal comes earlier than 0.5s).
-
- >> The data they get back when checking the protection or
- >> loading a program is corrupt and at least 50% of games will not bother
- >> to re-read.
-
- This happens with drives that signal RDY too early. There have been
- some drives in the past that did this, they didn't fail with the OS
- because it always reads first from the drive and retries on the initial
- error. These drives failed with some c0d3r style copy programs and
- of course with some games.
-
- --
- Michael van Elst
-
- Internet: mlelstv@serpens.rhein.de
- "A potential Snark may lurk in every tree."
-