Xref: utzoo comp.protocols.tcp-ip.ibmpc:1454 rec.ham-radio.packet:2302 Path: utzoo!attcan!uunet!mcvax!tuvie!hpuviea!mah From: mah@hpuviea.UUCP (Michael Haberler) Newsgroups: comp.protocols.tcp-ip.ibmpc,rec.ham-radio.packet Subject: diffs for KA9Q to use NS16550 UART in fifo mode Message-ID: <946@hpuviea.UUCP> Date: 16 Jul 89 13:45:28 GMT Reply-To: mah@hpuviea.UUCP (Michael Haberler,HP Vienna,2500/x412,961679) Organization: Hewlett-Packard Austria,Vienna Lines: 131 Using the NS16550 serial chip instead of the standard 8250 cuts down interrupts to about 7% due to on-chip buffering. Here are context diffs for 8250.{c,h} of the 'nos test' release. Using the 16550 also should leave some more latency for slow ethernet cards, so Ethernet/SLIP routing should work better. -michael p.s: Query of the Day: Who can point me to a source/documentation for Mike Chepponi's serial coprocessor card? begin 666 diffs.Z M'YV08]ZXH5,&#QT09-*8,3,'A)DW"\($$G M1HPA,XJX",,RP90Z;D HJ<,&1 P;-FOHD$%#1T6;.7#D4-"BJ$>0(DG*.)ER M91@Q+F'*I&D39PR=/'W" "IT(\>O8,-Z50%B1@T6-& H $B08(Q:,)$3%-& MSHX$+\@F&5A73ATX!\NX>,FV>4.F M3!L0 0?*>5-33!HZ#1]'3M 'Q)PP=LKL6,U&X)G#>.#*O9L9A)0R8\JDB4T& M-.4P8QJGALPV06TWM]_$EN/7#>^\OH$+GPY">E^I?2$NIVT;!)W MC\_=)@<>9(P&!QQED$$C&7481L<;((A1QT(4>D>=5#RVU25N:0PT!XV(!3>< M87DJ^!=J%4+&97GG!;JG6]B%Z!Y\IV$I*& EVEG>E_71^)N?Q$%IGW*%D@== M=]-5IZEV?T8D9W4-4B=>J,W=>5ZFC*[7WGOQT3&?IU+B%VI8P((U%@@UQ,!" 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