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ISAPNP(4) Device Drivers Manual ISAPNP(4)

isapnpintroduction to ISA Plug-and-Play support

isapnp0 at isa?

An isapnp bus can be configured for each supported ISA bus.

OpenBSD provides machine-independent bus support and drivers for ISA Plug-and-Play (isapnp) autoconfiguration of PnP-compatible devices on an ISA bus.

OpenBSD includes machine-independent ISAPNP drivers, sorted by function and driver name:

Adaptec AIC-6260 and AIC-6360 SCSI interface
WD100x compatible hard disk controller driver

serial communications interface

Aironet 4500/4800 IEEE 802.11FH/b wireless interfaces
3Com Fast EtherLink ISA (3c515) 10/100 Ethernet device
3Com EtherLink III and Fast EtherLink III 10/100 Ethernet device
AMD LANCE Ethernet device
NE2000 and compatible 10/100 Ethernet device
Western Digital/SMC WD80x3, SMC Elite Ultra, and SMC EtherEZ Ethernet device

ESS Technology AudioDrive family audio device
Gravis UltraSound/UltraSound MAX audio device
Roland/Yamaha MPU401 MIDI UART device
SoundBlaster family audio device

games adapter
introduction to PCMCIA (PC Card) support

intro(4), isa(4)

The isapnp driver appeared in NetBSD 1.3.

From time to time an isapnp device will be found which the kernel does not recognize. The kernel matches isapnp devices to device drivers based on identifiers which each device provides. For example, this device:

joy0 at isapnp0 "Creative SB16 PnP, CTL7001, PNPB02F, Game" port 0x200/8

This joystick calls itself by the two names “CTL7001” and “PNPB02F”. The latter is a standard name (which the kernel automatically recognizes), but “CTL7001” is a vendor-specific name which needs to be added to a table. Unfortunately, some devices advertise only their vendor-specific name; for instance:

"PnP Sound Chip, @P@1001, , " at isapnp0 port 0x200/8 not configured

Testing will show that this device is actually a joystick. To resolve the issue, the actual name “@P@1001” has to be entered into the database found in /sys/dev/isa/pnpdevs and a new kernel must be built. Then the device will probe like this:

joy0 at isapnp0 "PnP Sound Chip, @P@1001, , " port 0x200/8

September 3, 2016 OpenBSD-6.4