The Video Timing Controller v5.00.a removed all GPP interface ports. The Video Timing Controller v4.00.a.0 added the ability to operate on video frame sizes up to 8192 x 8192. Previous versions supported 4096 x 4096 maximum. If the maximum sizes of 8192 are selected, some GPP ports will be 13 bits wide where on previous versions of the core, these ports were 12 bits.
The Video Timing Controller v4.00.a also added the ability to detect and generate vertical signals with a horizontal offset. In order to report the horizontal start cycle of these vertical signals, the Video Timing Controller v4.00.a added the following new ports:
• gen_v0blank_hstart
• gen_v0blank_hend
• gen_v0sync_hstart
• gen_v0sync_hend
• det_v0blank_hstart
• det_v0blank_hend
• det_v0sync_hstart
• det_v0sync_hend