Linker error while interfacing USB Philips ISP1181a with8051

[john2020]

Hello,

I am just using Philips ISP1181a USB high speed Interface device for commuicating USB host. Philips provided the standard C programs for interface the 8051 microcontroller with isp1181a,it shows some errors while i am compiling and it shows the some Linking error

ERROR L118: REFERENCE MADE TO ERRONEOUS EXTERNAL
SYMBOL: IOREQUEST
MODULE: .\D13bus.obj (D13BUS)
ADDRESS: 0947H

*** ERROR L118: REFERENCE MADE TO ERRONEOUS EXTERNAL
SYMBOL: IOREQUEST
MODULE: .\D13bus.obj (D13BUS)
ADDRESS: 094CH
*** ERROR L118: REFERENCE MADE TO ERRONEOUS EXTERNAL
SYMBOL: IOREQUEST
MODULE: .\D13bus.obj (D13BUS)
ADDRESS: 095EH
*** ERROR L118: REFERENCE MADE TO ERRONEOUS EXTERNAL
SYMBOL: IOREQUEST
MODULE: .\D13bus.obj (D13BUS)
ADDRESS: 096FH
*** ERROR L118: REFERENCE MADE TO ERRONEOUS EXTERNAL
SYMBOL: IOREQUEST
MODULE: .\D13bus.obj (D13BUS)
ADDRESS: 0980H
*** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
SYMBOL: GENEPBUF
SEGMENT: ?ID?ISR
*** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
SYMBOL: IOREQUEST
SEGMENT: ?ID?ISR
*** ERROR L105: PUBLIC REFERS TO IGNORED SEGMENT
SYMBOL: INTRAMBUF
SEGMENT: ?ID?ISR
*** ERROR L118: REFERENCE MADE TO ERRONEOUS EXTERNAL
SYMBOL: IOREQUEST
MODULE: .\Mainloop.obj (MAINLOOP)
ADDRESS: 1298H
*** ERROR L118: REFERENCE MADE TO ERRONEOUS EXTERNAL
SYMBOL: IOREQUEST
MODULE: .\Mainloop.obj (MAINLOOP)
ADDRESS: 0F19H


it shows these errors ,anyone could help me for same.

Regards
john