Date: Sun, 27 Oct 1996 18:12:25 -0500 (EST) From: Sujal Patel <smpatel@umiacs.umd.edu> To: Barry Masterson <jbarrm@panix.com> Cc: Freebsd-questions <questions@FreeBSD.org> Subject: Re: ISA_PnP & pnp.c (was ISA_PnP & patch) Message-ID: <Pine.OSF.3.91.961027180840.20054A-100000@mickey.umiacs.umd.edu> In-Reply-To: <Pine.SUN.3.94.961027014125.27296A-100000@panix.com>
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> Pnpinfo offers a variety of configurations; 'good', 'acceptable', > and 'suboptimal'. pnpinfo gave me two 'good' configurations; > IRQ 5 & ports 0x220, 0x330 & 0x388, basically in line with the > settings listed in the sb16 manual. The other 'good' choice > is IRQ 10 & ports 0x168, 0x36e, no DMA listed. You can use any of the Suboptimal configurations (these configurations are no better or worse for FreeBSD). For example: 0x220, 0x300, 0x388 is valid because: Device decodes the full 16-bit ISA address I/O Range maximum address: 0x220 I/O Range maximum address: 0x280 I/O alignment for minimum: 32 I/O length: 16 Device decodes the full 16-bit ISA address I/O Range maximum address: 0x300 <----------- You can pick any base I/O Range maximum address: 0x330 <----------- between these values I/O alignment for minimum: 48 I/O length: 2 Device decodes the full 16-bit ISA address I/O Range maximum address: 0x388 I/O Range maximum address: 0x388 I/O alignment for minimum: 1 I/O length: 4 Sujal
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