diff options
| -rw-r--r-- | release/texts/alpha/HARDWARE.TXT | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/release/texts/alpha/HARDWARE.TXT b/release/texts/alpha/HARDWARE.TXT index 36b8414..83a2a70 100644 --- a/release/texts/alpha/HARDWARE.TXT +++ b/release/texts/alpha/HARDWARE.TXT @@ -435,6 +435,10 @@ The MiataGL has a faster PCI-PCI bridge chip on the PCI riser card than some of the MX5 riser card versions. Some of the MX5 risers have the *same* chip as the MiataGL. All in all there is a lot of variation. +Not all VGA cards will work behind the PCI-PCI bridge. +Workaround is to put the VGA card 'before' the bridge in one of the 64 bit +PCI slots. + Sound: Both MX5 and MiataGL have an on-board sound chip, an ESS1888. It emulates a SoundBlaster and can be enabled by putting @@ -1031,7 +1035,8 @@ Features: - Cypress 82C693 USB controller - Cypress 82C693 PCI-ISA bridge - Cypress 82C693 controller -- expansion: 2 independent PCI buses (called hoses) +- expansion: 2 independent PCI buses, driven by high-speed I/O + channels called 'hoses': hose 0: (the upper 3 slots) 2 64-bit PCI slots 1 32-bit PCI slot @@ -1077,12 +1082,13 @@ If you experience problems trying to use the USB interface please check if the SRM variable "usb_enable" is set to "on". You can change this by performing: "set usb_enable on" at the SRM >>> prompt. -Expansion: -Don't try to use NCR/Symbios-chip based SCSI adapters in the PCI slots +Expansion caveats: +- Don't try to use NCR/Symbios-chip based SCSI adapters in the PCI slots connected to hose 1. There is a not-yet-found FreeBSD bug that prevents this -from working correctly. Not all VGA cards will work behind the PCI-PCI -bridge (so in slots 4 & 5). Only cards that implement VGA-legacy adressing -correctly will work. Workaround is to put the VGA card 'before' the bridge. +from working correctly. +- Not all VGA cards will work behind the PCI-PCI bridge (so in slots 4 & 5). +Only cards that implement VGA-legacy adressing correctly will work. Workaround +is to put the VGA card 'before' the bridge. Sound: The sound chip is not currently supported with FreeBSD. There is work in @@ -1109,7 +1115,8 @@ Features: max. 4Gb - 21271 Core Logic chip-set ("Tsunami") - embedded Adaptec ? Wide Ultra SCSI -- expansion: 2 independent PCI buses (called hoses) +- expansion: 2 independent PCI buses, driven by high-speed I/O + channels called 'hoses' 6 64-bit PCI slots (3 per hose) 1 ISA slot @@ -1161,7 +1168,8 @@ Features: - embedded Adaptec AIC7890/91 Wide Ultra SCSI - 2x embedded IDE based on Cypress 82C693 chips - embedded USB via Cypress 82C693 -- expansion: 2 independent PCI buses (called hoses) +- expansion: 2 independent PCI buses driven by high-speed I/O + channels called 'hoses' 6 64-bit PCI slots (3 per hose) 1 ISA slot |
