Path: utzoo!attcan!uunet!husc6!mailrus!csd4.milw.wisc.edu!jgreco
From: jgreco@csd4.milw.wisc.edu (Joe Greco)
Newsgroups: comp.sys.cbm
Subject: Re: Zmodem implementations
Message-ID: <1529@csd4.milw.wisc.edu>
Date: 12 Mar 89 07:05:21 GMT
References: <1786.2416BB83@isishq.FIDONET.ORG>
Sender: news@csd4.milw.wisc.edu
Reply-To: jgreco@csd4.milw.wisc.edu (Joe Greco)
Organization: Starbase 74 - Starfleet Operational Support Services
Lines: 45

In comp.sys.cbm article <1786.2416BB83@isishq.FIDONET.ORG>, izot@f171.n221.z1.FIDONET.ORG (Geoffrey Welsh) wrote:
 [ note, this is a reply to BOTH Hank and Geoff ]

] > From: Hank@cup.portal.com (Hank W Oxford)
] > Message-ID: <15397@cup.portal.com>
] >
] > 1)  As to 3/4 implementations, most PC BBS's are using Forsberg's own
] >  DSZ.
] 
]   Nonsense. PCBoard v14, Opus, QuickBBS, and plenty of others provide
]internal ZMODEM support. Terminal programs like Telix also provide internal 
]support, so that a BBS program supporting ZMODEM would have to deal with the 
]shortcomings (if there are any) in all the terminals out there.

That sounds like a more reasonable assumption to me, Geoff.  Somehow I
doubted that a single implementation was universal.  Heck, even Punter
protocol has been written from scratch by a few folks.

] > 2) In reference to Tandy PC's disk and serial I/O:
] > Do you own EVERY Tandy PC?  No?  I didn't think so.  I said _some_ Tandy
] > PC's have such a problem.  Some of the less expensive models will not
] > (do not) support DMA.
] 
]   I think Joe was talking about a C64 and an IEEE-488 drive. That setup 
]doesn't support DMA, either, but has no problems running the RS-232 port & 
]drives at the same time.

(checks newsgroups: line.... um, comp.sys.cbm...)

2) In reference to Tandy PC's disk and serial I/O:  (a) I don't care
how atrocious it is or is not.  (b) This is comp.sys.cbm, not
comp.sys.ibm-uncompatible.  Geoff's assumption of what I am talking
about is certainly correct.  Where you get your assumption is a
mystery to me.  (c) I do not own ANY Tandy PC, and the chances are
very very good that I never will.  I have seen the difficulties others
have with them, and I am not willing to pay outrageous T/RS prices for
inferior products.  (d) I was under the impression that the general PC
architecture relied on DMA for DRAM refresh.  The one design I've
actually SEEN did it using DMA.  How do the cheaper (don't be afraid
to say it) Tandy units do it?  (e) Do YOU own every Tandy PC?
--
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