HP Visualize c360 PA-RISC Visualize Workstation Universal Serial Bus
HP Visualize c360 - Workstation Manual
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- HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 1
- HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 2
device, or • if you need a keyboard and mouse cable longer than 2.5m, or • if you simply lament the passing of HP-HIL. This presentation does not apply to Intel-based VISUALIZE workstations, as they have had USB ports for some time (as have most PCs), and like all NT Workstations, are awaiting - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 3
for USB. • How USB compares to legacy and contemporary alternatives. • How USB will roll out on PA-RISC platforms. • How USB is supported in PA-RISC hardware, firmware and HP-UX. • The initial USB devices. • Considerations for buyers and users at the transition. • Considerations for developers. - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 4
years, widespread acceptance has been delayed by lack of B devices, which, in turn, have been awaiting: • O.S. support: Still waiting for "NT". Win95 support is problematic. • BIOS support: Most "USB" PCs have no USB console capability in BIOS. • Economics: Some PS/2 devices are still cheaper - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 5
(Apple Desktop Bus), Access.Bus, AT&T CHI (Concentration Highway Interface), Apple GeoPort and HP-HIL. 4. The IRQ shortage in the Intel architecture isn't going to be solved by adding new capabilities, lower development cost, lower prices, and dramatic improvements in supportability and ease of use. - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 6
USB Standards Report There are two hardware Host Controller Interface architectures: UHCI (Universal), and OHCI (Open). UHCI appears on Intel motherboards. OHCI is predominant elsewhere - and is what PA-RISC workstations will use. The underlying USB Standard is presently at release 1.1. {http:// - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 7
A Closer Look • Devices may be compound (have multiple functions) or contain hubs. • Devices are high-speed (12 Mbps) or low- speed (1.5 Mbps) only. Hubs are high only. • Differential Data Signalling (3.3V NRZI) • +Vcc is 500mA @ 5 Vdc • Devices may supply own power. • Vcc and Ground make - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 8
USB Topology - "Tiered Star" Root Hub Device 1 Hub 2a Device Device Device 2b Device Device Hub 3a Hub Device Device Hub Device Hub 3b 4 Device Hub 3c Device Hub Device 5 (max. powered Device Device Hub hub depth) Max. device depth Device Device • Only devices (not other hubs) may - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 9
yet clear if any true bridges or remote-repeaters for USB will appear (the equivalent of LAN bridges, the HP 46082A/B HIL extensions or the HP 37204A HP-IB extender). Strongly Discouraged: • Style A (receptacle) to Style A (plug) passive extension cables. Notwithstanding, they do exist, and can lead - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 10
The Uses of USB Ideal Uses • Most human input devices: bar code, buttons, digitizers, gaming, gloves, joysticks, keyboards, knobs, light-pens, mice, 6-axis, tablets, trackballs, touch-pads • Modem & telephony: POTS, FAX, ISDN, T1, ADSL, low-end cable modem • Printers, up through 40 ppm or so • - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 11
for DAT, DLT and other streaming formats) • Instrumentation (USB no faster than HP-IB), PCMCIA (PC Card) adaptors • Character-mode terminals, home appliance control ( or PCI cards, purely based on the lower cost and ease of support. If IEEE-1394 (Apple "FireWire") becomes established on the PC, they - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 12
or Local 100-500mA / port 1 A / port Yes No 127 2 + eavesdrops All Keyboard and Mouse only 12 Mbps ~12.5 Kbps CRC Packet re-try None Clocked I/O HP-HIL 1 4 3m ~45m Daisy-Chain No No Host only 1 A / system No 7 Yes 60 Kbps None Clocked I/O Serial Open (2 typ.) 3...25 (9 typ.) 50 ft - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 13
USB Alternatives Attribute USB IEEE-1394 async SCSI sync SCSI Ports per host Open (2 typ.) Typ. 1...4 Open (1 typ.) Open (1 typ.) Pin count 4 6 50 50 or 68 Cable segment length 5m 4.5m 6m varies (single-ended) Max. transparent distance Topology 30m Tiered-Star 72m Unlimited w/ - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 14
existing processors may integrate USB. • Existing processors with PCI may use a USB PCI card (and require an upgrade to at least the USB release of HP-UX 10.20 or 11.x). - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 15
Port Evolution on all-new PA-RISC SPUs USB Serial Parallel PS/2 1998 1999 2000 • PS/2 is not present on SPUs with built-in USB, and is not expected to re-appear on any future all-new processor design prior to IA-64. • Parallel may be replaced by a USB-parallel adaptor in the next generation. • - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 16
USB Support: PA-RISC Hardware • Root hub is based on a National PC87560 Super I/O chip. • This No USB hub is required for the keyboard and mouse in the USB User Interface Kit. Future monitors may include or support a built-in hub. • Full 500 mA Vcc+ per port is available. • One or more USB PCI cards - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 17
as "HID boot", but is not a full keyboard, needs to be located beyond the console keyboard in the topology. • Hot detach-reattach is not supported. The SPU must be rebooted if the keyboard is disconnected during boot. • If no keyboard is found, firmware seeks console on the first serial port. - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 18
10.20 ACE-4, or • Requires 11.x (exact release nomenclature unknown at publication) • Supports all WSY-supplied localized layouts. • Does not support Euro ( ), since the ITE emulates HP term0, which defines only the HP-Roman8 character set, which has no available code position for Euro. Euro is - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 19
USB Support: HP-UX Kernel (Apps & Admin) Host Interconnect Device User Code dev_t, data buffer USB Class Driver pipe, data buffer USB Services endpoint, data buffer Host Controller Driver interface pipe bundle pipe0 Function USB Device USB Hardware Interface Packet Protocol USB Hardware - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 20
(although some will appear in ioscan as "unsupported"). HP-UX support for UHCI, although not currently scheduled, will be necessary calls only access Class drivers. User-space I/O to the raw bus is not supported. • USB-specific Class developer calls: pipe management (13), data transfer (8), device - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 21
USB Support: HP-UX Kernel (cont.) USB Class Drivers supplied at initial release: • Hub: Printer: However, it may be trivial, mainly because Unix has no GDI. Further, at the I/O port level, HP-UX presumes only a raw data stream (lprpp(1M) handles EOL mapping, and the app or spooler is responsible for - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 22
on all interfaces. Euro support is a retrofit to the current PS/2 keyboards (in work now as User Interface Kit A4030G). • Hot attach/detach does not ship in the first release. • HP-UX will implement X-USB APIs as standards emerge. • See next page for feature support on the USB keyboard and - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 23
). 2.5 meter cable. • USB 3-Button Scroll Mouse Scroll-wheel has separate motion & button Forward is X-button4, reverse button5. 2.5 meter cable. • HP D6804A USB Hub (already on CPL) 4-port, powered Docks with emerging HP monitors Not officially supported, but if you must have a hub, use this one. - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 24
required input devices. If you add any USB devices, you will need a hub. None are officially supported yet, but so far, every hub we've tested has worked. • Some random USB devices simply work. HP-UX does not strictly reject unknown/unsupported devices. However, do not assume that any random "plug - HP Visualize c360 | PA-RISC Visualize Workstation Universal Serial Bus - Page 25
USB Developer Considerations • The HP-UX DDK has not yet been updated for USB. If you know impossible. • Caution: the current National Super I/O chip used for the built-in USB does not support isochronous USB protocol. If your device can't be operated correctly using USB bulk or USB interrupt I/O,
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