1
Discussion - EVE / Re: How often and when read REG_TOUCH_TAG
« on: February 08, 2024, 04:39:24 PM »
In our code, REG_TOUCH_TAG is read 20ms after CMD_SWAP. It doesn't check REG_CMD_WRITE = REG_CMD_READ before it is read. I inherited this code so didn't verify the 20ms myself, but the person that did told me it needed to be there, and was a conservative amount of time to wait.
Our code alternates between drawing pages and reading REG_TOUCH_TAG as fast as possible, so only ever reads REG_TOUCH_TAG after drawing a page. It never reads REG_TOUCH_TAG two times in a row.
Sorry, not as empirical as you may have liked, but it has been 100% stable for several years.
Our code alternates between drawing pages and reading REG_TOUCH_TAG as fast as possible, so only ever reads REG_TOUCH_TAG after drawing a page. It never reads REG_TOUCH_TAG two times in a row.
Sorry, not as empirical as you may have liked, but it has been 100% stable for several years.