===== Summary =====
{| class="FCK__ShowTableBorders"{{Prettytable|width: 700px; font-size: 2em;}}
|-
| ''Bit'' || ''Value'' || ''Function''
|-
| 7 || 0 || rowspan="2" | Gate Array function "Pen Selection"
|-
| 6 || 0
|-
| 5 || - || not used
|-
| 4 || 1 || Select border
|-
| 3 || x || rowspan="4" | Ignored
|-
| 2 || x
|-
| 1 || x
|-
| 0 || x
|}
<br>
{| class="FCK__ShowTableBorders"{{Prettytable|width: 700px; font-size: 2em;}}
|-
| ''Bit'' || ''Value'' || ''Function''
|-
| 7 || 0 || rowspan="2" | Gate Array function "Pen Selection"
|-
| 6 || 0
|-
| 5 || - || not used
|-
| 4 || 0 || Select pen
|-
| 3 || x || rowspan="4" | Pen number
|-
| 2 || x
|-
| 1 || x
|-
| 0 || x
|}