Emulation apparatus

Details Emulation apparatus Emulation apparatus

1995-06-05

1998-06-02

Voeltz, Emanuel Todd

395733, 395734, 395739, G06F 946, G06F 944

Patent

active

057614822

ABSTRACT:
An access condition coincidence detecting circuit detects that an address stored in an access condition storing register 44 is outputted to an address bus 29. When a counter 46 counts a certain number of detecting signals, it inputs a break point signal to an AND circuit 36. On the other hand, it is detected that an address stored in a break address storing register 34 is outputted to the address bus 29. When the break point signal is inputted to the AND circuit 36, this detecting signal is outputted from the AND circuit 36 as an interruption demand signal. Such a construction provides an emulation apparatus capable of securely controlling interruption of a program under complicated address coincidence conditions in an emulating operation of a microcomputer.

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patent: 4875186 (1989-10-01), Blume, Jr.
patent: 5321828 (1994-06-01), Phillips et al.
patent: 5408637 (1995-04-01), Shimizu
patent: 5493659 (1996-02-01), Kurakazu et al.
patent: 5539901 (1996-07-01), Ramirez

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