Support of MSX-modem machines

[zeilemaker54]

Are you interested in supporting MSX-modem machine like the Sony HB-T600, HB-T7 and the Mitsubishi ML-TS2 ? I am in the process of disassembly of the firmware of these machine, from which I can deduct some of the hardware details. It would be nice to add some minimal support, to get the MSX-modem BASIC and the TELCOM application working.

Regards, Arjen Zeilemaker

[MBilderbeek]

Yes I am, at least to get the software working. Better than nothing :) Hardware details are always welcome.

[zeilemaker54]

HB-T600 hardware registers: D.7F00 EQU 7F00H ; NCU register data D$7F40 EQU 7F40H ; NCU register select D.7FC0 EQU 7FC0H ; segment select / line status

ML-TS2 hardware registers: D.7F00 EQU 7F00H ; NCU register 0 D.7F01 EQU 7F01H ; NCU register 1 D.7F02 EQU 7F02H ; NCU register 2 D.7F03 EQU 7F03H ; NCU register 3 D.7FC0 EQU 7FC0H ; segment select / line status

register definitions: ; 7FC0, read ; b3-b0 = line status ; 7FC0, write ; b2-b0 = ROM segment (4000H-5FFFH)

; NCU register 0, read ; b0 = ; b1 = ; b2 = ; b3 = break detected ; b4 = long loop detected ; b6 = ; b7 = dial tone detected ; NCU register 1, read ; b3 = empty transmitter ; b2 = data in receiver ; b1 = ; b0 = ; NCU register 2, read ; not used ; NCU register 3, read ; receiver data

; NCU register 0, write ; NCU register 1, write ; b7 = send break disabled ; b3 = disable receiver ; NCU register 2, write ; NCU register 3, write ; transmitter data