Lähdekoodi sivulle M8652YA

M8652 YA option KL8F is a compatible UART-based replacement for the M8650 card. There is next to no documentation online about it. It uses YA-5-1012 uart. Datasheet for it isn't available, but apart from the voltage rails and max baud rate it seems to be compatible with YA-5-1013A.

What I have gathered:

*The crystal oscillator depends on the board type:
** No suffix: 14.418MHz
** YA: 19.661MHz
** YB: 17.629MHz
** YC: 14.762MHz
* Jumpers AB, DC, FE, HG, JI:
** These select the baud rate, on YA variation AB is 2400 baud
* Jumpers NM-ON-OK:
** Having all set means transmit and receive baud rates are the same
** Setting JK, OK, ON and LM (no NM) allows slow receive baud rate and different higher transmit baudrate
* Jumpers G-L; 1-2 is high, 1-3 is low
** G: Parity type: 0 odd, 1 even
** H: NB1 - number of data bits
** I: NB2 - number of data bits
** J: SB - number of stop bits, 0 = 1 stop bit, 1 = 2 stop bits
** K: No parity - 1 disables parity, 0 enables
** L: CS - control strobe, hardwire to 1

Number of data bits is:
* NB1 = 0; NB2 = 0 -> 5
* NB1 = 1; NB2 = 0 -> 6
* NB1 = 0; NB2 = 1 -> 7
* NB1 = 1; NB2 = 1 -> 8

 M8652YA board uses AY-5-1013A UART chip [https://nx2063.your-storageshare.de/s/T5cyJW622NwBxb6 AY-5-1013A UART.pdf] for the RS232 protocol.
 Pictures and schematics for the board are available from so-much-stuff.com [https://nx2063.your-storageshare.de/s/6HQPzzXBFjrLGA9 Component Side], [https://nx2063.your-storageshare.de/s/nmxMq8YzZLp8GtP Solder side], [https://nx2063.your-storageshare.de/s/JqDQMHnt56oKZAm Layout] and [https://nx2063.your-storageshare.de/s/A9e9PZxyJdceJzG Schema]