Title:
割り込みフラグ管理方法
Document Type and Number:
Japanese Patent JP3571667
Kind Code:
B2
Abstract:
A method of increasing the amount of directly addressable memory address locations that can be allocated to RAM. An initialization routine is executed to identify ROM's in reserved memory address space that are to be reallocated. Suitable address space in extended memory is located and the ROM's are mapped into extended memory address space. A ROM access interceptor routine is implemented to trap ROM accesses and direct them to the reallocated address space. A ROM access handler routine is implemented to contain the ROM execution and to restore the computer system to a condition where it can continue execution of application or system software after the ROM access is completed. Memory addresses in reserved address space formerly allocated to ROM's can be reallocated to RAM or other memory devices.
Inventors:
Spear, dan
Rally mayer
Rally mayer
Application Number:
JP2001150838A
Publication Date:
September 29, 2004
Filing Date:
May 21, 2001
Export Citation:
Assignee:
Quarterdeck Corporation
International Classes:
G06F9/34; G06F9/30; G06F9/455; G06F9/46; G06F9/48; G06F12/02; G06F12/06; G06F12/14; G06F; (IPC1-7): G06F9/34; G06F9/46
Domestic Patent References:
| JP63244147A | ||||
| JP573156A |
Attorney, Agent or Firm:
Masaki Yamakawa