No higher resolution available.
IM2_Plus_Ack_Bug.png (761 × 363 pixels, file size: 20 KB, MIME type: image/png)
Red marker is at start of IRQ acknowledge cycle which is immediately seen by the ASIC (INTn goes up) : vector is 0x06 Purple marker is at the effective cycle where the Z80 sample the vector, and where the ASIC sees a second acknowledge. Vector is now 0x04.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:55, 30 July 2017 | | 761 × 363 (20 KB) | Gerald (Talk | contribs) | Red marker is at start of IRQ acknowledge cycle which is immediately seen by the ASIC (INTn goes up) : vector is 0x06 Purple marker is at the effective cycle where the Z80 sample the vector, and where the ASIC sees a second acknowledge. Vector is now 0... |
- You cannot overwrite this file.
File usage
There are no pages that link to this file.
