As mesiasmsx say, I connected pins following caro's table (see above) but several keys are inverted. Although I checked pin-out again an I took as a reference the Philips keyboard where pin 22 is not present, I suspect that the problem is related with the IDC-26P pin configuration. In order to confirm, could anyone please give me what's the pin out of this connector? Thank you in advance.
You probably swapped x5 with x4 if keys W and X behave similar
Compare with this table and changed as necessary:
International Key matrix tabel
bit 7 6 5 4 3 2 1 0
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBE5 | 7 & | 6 ^ | 5 % | 4 $ | 3 # | 2 @ | 1 ! | 0 ) | 0
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBE6 | ; : | ] } | [ { | \ | | = + | - _ | 9 ( | 8 * | 1
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBE7 | B | A |Accen| / ? | . > | , < | ` ~ | ' " | 2
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBE8 | J | I | H | G | F | E | D | C | 3
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBE9 | R | Q | P | O | N | M | L | K | 4
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBEA | Z | Y | X | W | V | U | T | S | 5
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBEB | F3 | F2 | F1 | CODE| Caps|Graph| Ctrl|Shift| 6
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBEC |Enter|Selec| BS | Stop| Tab | Esc | F5 | F4 | 7
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBED |Right| Down| Up | Left| Del | Ins | Home|Space| 8
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBEE | [4] | [3] | [2] | [1] | [0] | [/] | [+] | [*] | 9
+-----+-----+-----+-----+-----+-----+-----+-----+
#FBEF | [.] | [,] | [-] | [9] | [8] | [7] | [6] | [5] | A
+-----+-----+-----+-----+-----+-----+-----+-----+
Thank you both I'll check it.
I have news !
The Captain NTT keyboard adaptor from PAC for Philips Keyboard 8280/50/55 now works fine and 100%
Great!, congrats mesiasmsx!
I didn't expect anything else it consumed as usual some time !
Thanks to the creator from this post, all contributors , msxholder and PAC Co. LTD for built the adaptor .
Keyboard connector type: DIN13 ---------------------------------------- ! PIN ! Gradiente Expert (all models) ! ---------------------------------------- ! 1 ! X5 ! ! 2 ! X3 ! ! 3 ! X1 ! ! 4 ! Y2 ! ! 5 ! X4 ! ! 6 ! X2 ! ! 7 ! X0 ! ! 8 ! Y3 ! ! 9 ! X7 ! ! 10 ! X6 ! ! 11 ! Y0 ! ! 12 ! Y1 ! ! 13 ! +5V ! ----------------------------------------
Good news for the old Captain...arrrrf!!! This kind of adaptors are really good stuff...The Daewoo´s 400 keyboard, for instance, is a very good looking keyboard...it would be great to use them it other machines!