Name vic_ISA ;
PartNo 00 ;
Date 01/10/03 ;
Revision 01 ;
Designer Lee ;
Company ;
Assembly None ;
Location ;
Device g16v8as ;
/* This is the glue for the vic 20 ISA card & RAM/ROM expansion */
/* Logic minimisations None */
/* Optimizations None */
/* Download JEDEC/POF/PRG */
/* Doc File Options fuse plot, equations */
/* Output None */
/* INPUT PINS */
PIN 1 = dlp2 ; /* delayed phase 2 */
PIN 2 = VRW ; /* VIC read write */
PIN 3 = !BLK1 ; /* block select */
PIN 4 = !BLK2 ; /* block select */
PIN 5 = !BLK3 ; /* block select */
PIN 6 = !BLK5 ; /* block select */
PIN 7 = CRW ; /* CPU read write */
PIN 8 = p2 ; /* phase 2 */
PIN 9 = !IO3 ; /* I/O access */
PIN 11 = !RES ; /* reset */
/* OUTPUT PINS */
PIN 19 = ROM ; /* 8/16/24/32K ROM */
PIN 18 = RAM ; /* 8/16/24/32K RAM */
PIN 17 = ROM_A14 ; /* ROM address line */
PIN 16 = A13 ; /* ROM/RAM address line */
PIN 15 = RAM_A14 ; /* RAM address line */
PIN 14 = ISA_RES ; /* ISA card reset line */
PIN 13 = ISA_IOW ; /* ISA card I/O write */
PIN 12 = ISA_IOR ; /* ISA card I/O read */
/* Output terms */
/* comment out the RAM/ROM configuration lines you don't want */
/* 24K expansion RAM with 8K ROM in the autostart block */
/* $2000 = RAM $4000 = RAM $6000 = RAM $A000 = ROM */
/*!ROM = BLK5 ; /* 8/16/24/32K ROM */
/*!RAM = BLK1 # BLK2 # BLK3 ; /* 8/16/24/32K RAM */
/* 16K expansion RAM with 16K autostart game ROM */
/* $2000 = RAM $4000 = RAM $6000 = ROM $A000 = ROM */
!ROM = BLK3 # BLK5 ; /* 8/16/24/32K ROM */
!RAM = BLK1 # BLK2 ; /* 8/16/24/32K RAM */
!ROM_A14 = BLK1 # BLK5 ; /* ROM address line */
!A13 = BLK2 # BLK5 ; /* ROM/RAM address line */
!RAM_A14 = BLK1 # BLK5 ; /* RAM address line */
ISA_RES = RES ; /* ISA card reset line */
!ISA_IOW = !CRW & IO3 & p2 & dlp2 ; /* ISA card I/O write */
!ISA_IOR = CRW & IO3 & p2 & dlp2 ; /* ISA card I/O read */
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