Editing Atari TT030 (section)

== Video ==

The TT030 uses the '''TT Shifter''' custom chip, which provides six display modes:<ref>{{cite web |url=https://en.wikipedia.org/wiki/Atari_TT030 |title=Atari TT030 – Display modes |publisher=Wikipedia |access-date=2026-03-27}}</ref>

<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table"
! Resolution !! Colours !! Notes
|-
| 320×200 || 16 (from 4096) || ST Low compatible
|-
| 320×480 || 256 (from 4096) || TT Medium; also 256 greyscale mode
|-
| 640×200 || 4 (from 4096) || ST Medium compatible
|-
| 640×480 || 16 (from 4096) || TT High colour
|-
| 640×400 || 2 (duochrome) || ST High compatible
|-
| 1280×960 || Monochrome || TT High mono; requires ECL TTM195 19″ monitor
|}

The TT Shifter features a 64-bit wide bus with interleaved access to system memory and on-chip buffers. ST-compatible modes use a contiguous 32 KB memory block, while TT-native modes require up to 154 KB.

The TT030 does '''not''' include a BLiTTER chip. The original 8 MHz BLiTTER from the Mega ST would have bottlenecked the system, and Atari chose not to design a faster 32 MHz replacement.