Soundbastard glue logic 2 Harrie van Dijck, Anton Verheijen 24-04-2000 (rev 1: fixed ata write latch) CHIP SBGLUE2 GAL22V10 ; $FF10 : SECOND BYTE OF 16 BIT ATA INTERFACE ; $FF11 : UNUSED ; $FF12-$FF13: LCD DISPLAY ; $FF14-$FF17: 8255 IC (PARALLEL PORT) ; $FF18-$FF19: KEYBOARD NRD NWR RES A0 A1 A2 A3 A4 A5 A6 A7 GND ; 1 2 3 4 5 6 7 8 9 10 11 12 ; 13 14 15 16 17 18 19 20 21 22 23 24 NSEL GWATA GRATA NOCWATA NOCRATA ELCD RWLCD NCSKEY NRES NCSPAR NC VCC @UES SBGLUE2 EQUATIONS GWATA = /NSEL*/A7*/A6*/A5* A4*/A3*/A2*/A1*/A0*/NWR GRATA = /NSEL*/A7*/A6*/A5*/A4*/NRD /NOCWATA = /NSEL*/A7*/A6*/A5*/A4*/NWR /NOCRATA = /NSEL*/A7*/A6*/A5* A4*/A3*/A2*/A1*/A0*/NRD ELCD = /NSEL*/A7*/A6*/A5* A4*/A3*/A2* A1*/NRD + /NSEL*/A7*/A6*/A5* A4*/A3*/A2* A1*/NWR RWLCD = /NSEL*/A7*/A6*/A5* A4*/A3*/A2* A1*/NRD /NCSKEY = /NSEL*/A7*/A6*/A5* A4* A3*/A2*/A1 /NRES = RES /NCSPAR = /NSEL*/A7*/A6*/A5* A4*/A3* A2