TEXAMERGE

Description

Uploads a 16 bit texture directly to a 16 bit framebuffer

Every 50 vsyncs swap TEXA TA0 and TA1 values between 0x80 and 0

This tests if the merge circuit behaviour is influenced by the TA0 and TA1 fields in the TEXA register

Software modes display output emulation would use the values of TEXA, the test image on would blink because of this

Hardware modes display output did not use TEXA The test image on screen would be constant (accurate to console)

On a PS2, the image will not blink, indicating that the display output circuit does not use TEXA