Costar Matrix
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All(?) Costar keyboards share the same key matrix. Row and column orders have been chosen to correspond to the pin order of the Filco Majestouch full size keyboards.
Using hasu's notation, the matrix looks like this
Matrix
| Col 0 | Col 1 | Col 2 | Col 3 | Col 4 | Col 5 | Col 6 | Col 7 | |
|---|---|---|---|---|---|---|---|---|
| Row A | no | RCTL | no | no | LCTL | BRK | no | F5 |
| Row B | F12 | ENT | BSPC | BSLS | F9 | (bsp2) | F11 | F10 |
| Row C | RALT | no | no | no | no | SLCK | LALT | PSCR |
| Row D | APP | DOT | F7 | L | F8 | O | no | 9 |
| Row E | (braz) | COMM | RBRC | K | EQL | I | F6 | 8 |
| Row F | N | M | Y | J | 6 | U | H | 7 |
| Row G | B | V | T | F | 5 | R | G | 4 |
| Row H | no | C | F3 | D | F2 | E | F4 | 3 |
| Row I | no | X | CAPS | S | F1 | W | NUBS | 2 |
| Row J | no | Z | TAB | A | GRV | Q | ESC | 1 |
| Row K | DOWN | NLCK | P4 | P1 | DEL | P7 | SPC | no |
| Row L | RGHT | PSLS | P5 | P2 | INS | P8 | P0 | no |
| Row M | no | no | no | RGUI | no | (kc_l) | no | (kc_r) |
| Row N | no | no | LSFT | RSFT | no | no | no | no |
| Row O | LEFT | no | no | PENT | HOME | PPLS | UP | END |
| Row P | no | no | LGUI | no | no | no | no | no |
| Row Q | PMNS | PAST | P6 | P3 | PGUP | P9 | PDOT | PGDN |
| Row R | SLSH | no | LBRC | SCLN | MINS | P | QUOT | 0 |
The keys (kc_r), (kc_l), (braz), and (bsp2) all have switch locations on at least some of the main boards. (kc_r) and (kc_l) are for Japanese layouts, (bsp2) is the left part of a split backspace key, and (braz) the key appearing on Brazilian keyboards left of right shift.
