Added PCI desc

1 files changed, 43 insertions, 1 deletions

diff --git a/com32/lua/doc/syslinux.asc b/com32/lua/doc/syslinux.asc
index 61897266..71593066 100644
--- a/com32/lua/doc/syslinux.asc
+++ b/com32/lua/doc/syslinux.asc
@@ -152,7 +152,49 @@ PCI
 
 .pci_getinfo()
 
-.pci_getidlist()
+Return list of value pairs (device_index, device) of all PCI devices.
+
+.pci_getidlist(filename)
+
+Load a tab separated list of PCI IDs and their description. 
+Sample files can be found here: http://pciids.sourceforge.net/
+
+
+_Example_:
+......................................................
+-- get nice output
+printf = function(s,...)
+           return io.write(s:format(...))
+         end
+
+-- get device info
+pciinfo = pci.getinfo()
+
+-- get plain text device description
+pciids = pci.getidlist("/pci.ids")
+
+-- list all pci busses
+for dind,device in pairs(pciinfo) do
+
+  -- search for device description
+  search = string.format("%04x%04x", device['vendor'], device['product'])
+
+  printf(" %04x:%04x:%04x:%04x = ", device['vendor'], device['product'],
+			device['sub_vendor'], device['sub_product'])
+
+  if ( pciids[search] ) then
+         printf("%s\n", pciids[search])
+  else
+         printf("Unknown\n")
+  end
+end
+
+-- print(pciids["8086"])
+-- print(pciids["10543009"])
+-- print(pciids["00700003"])
+-- print(pciids["0070e817"])
+-- print(pciids["1002437a1002437a"])
+......................................................
 
 
 VESA