Re: linux-kernel-digest V1 #118

Alan Cox (
Tue, 18 Jul 1995 09:16:48 +0100 (BST)

> From: Albert Cahalan <>
> Date: Sun, 16 Jul 1995 12:57:13 -0400
> Subject: Serial driver
> > I'm in the (ugly) process of porting the x86 serial driver
> > to the 680x0 version of Linux. (I'm working on a prototype ISA->Zorro
> > board). Aside from the obvious problem, that x86 linux hasn't yet
> > incorportated the mach-ind extensions found in 1.2pl1 (680x0),
> > I'm wondering if there is a way to get rid of the static rs_table
> > arrays, which probably take up a decent chunk of memory.
> Perhaps you should write a 680x0-only driver.

No the rs_table is a silly piece of bloat (about 10K). I already take all
the spare slots out of kernels I build for 4Mb machines.. thats two more
precious pages of memory saved.

> You can use that driver for a PC (x86 or Alpha), but I think it might
> be easier to write from scratch for 680x0 hardware. You don't even
> use the same UARTs, do you?

Depends on the boards.