V1.1$0000..$07FF ROM1$0800..$0FFF ROM2$1000..$17FF ROM3$1800..$27FF ROM4$3800..$3BFF RAM$FFE0 | 8251 - DATA$FFE1 | 8251 - CONTROL$FFE4 | 8253 - COUNTER 0$FFE5 | 8253 - COUNTER 1$FFE6 | 8253 - COUNTER 2$FFE7 | 8253 - CONTROL$FFF9 | CONTROL | B0 = | B1 = | B2 = | B3 = | B4 = | B5 = | B6 = | B7 = $FFFA | SET INV SCAN LOW ADDRESS$FFFB | SET INV SCAN HIGH ADDRESS$FFFC | SET ADBL$FFFD | SET ADBH$FFFE | SET DBL$FFFF | SET DBH