TQK25 (M7605) settings: John Wilson 17-Jul-1996 CSR address (N=on F=off) TSDB/TSBA SW2-1:4 UNIT 17772520 NNNN 0 *default* 17772524 NNNF 1 17772530 NNFN 2 17772534 NNFF 3 Optional Register Addresses (not usually used) 17772720 FFNN 0 17772724 FFNF 1 17772730 FFFN 2 17772734 FFFF 3 17777360 FFNN 0 17777364 FFNF 1 17777370 FFFN 2 17777374 FFFF 3 17777420 FFNN 0 17777424 FFNF 1 17777430 FFFN 2 17777434 FFFF 3 Vector address: Set by SW1-1:7, switches 1:7 are vector bits 8:2 (bits 1 and 0 of vector are always 0), with N=0 and F=1. So for 224 (default) SW1-1:7 = NFNNFNF. Jumpers JP1:3 set the priority level (I=in O=out) JP1:3 BR4 OOO *default* BR5 IOO BR6 OIO BR7 OII SW1-8 should always be off to select 22-bit addressing. JP4 (if it exists and isn't etched right on the board) should always be in to enable block mode DMA. So the default settings (for 17772520/224/BR4, i.e. MS0:) are: SW2-1:4 NNNN (4-posn DIP, position 1 is away from edge connector) SW1-1:8 NFNNFNFF (8-posn DIP, " " " " " " ") JP1:3 all out JP4 in