diff --git a/65xx.dcm b/65xx.dcm
index 0e09060..119a440 100644
--- a/65xx.dcm
+++ b/65xx.dcm
@@ -108,6 +108,30 @@ K 6502 6522 VIA I/O
 F http://www.6502.org/documents/datasheets/mos/mos_6522_preliminary_nov_1977.pdf
 $ENDCMP
 #
+$CMP 6523
+D 6523 NMOS Tri-Port Interface (TPI), 24-pin I/O, DIP-40
+K 6502 6523 TPI I/O
+F http://www.6502.org/documents/datasheets/mos/mos_6523_tpi_preliminary_nov_1980.pdf
+$ENDCMP
+#
+$CMP 6525
+D 6525 NMOS Tri-Port Interface (TPI), 24-pin I/O, DIP-40
+K 6502 6525 TPI I/O
+F http://www.6502.org/documents/datasheets/mos/mos_6525_tpi_preliminary.pdf
+$ENDCMP
+#
+$CMP 6526
+D 6526 NMOS Complex Interface Adapter (CIA), 20-pin I/O, 2 Timer/Counters, RTC, DIP-40
+K 6502 6526 CIA I/O
+F http://www.6502.org/documents/datasheets/mos/mos_6526_cia_preliminary_nov_1981.pdf
+$ENDCMP
+#
+$CMP 6529
+D 6529 NMOS Single Port Interface (SPI), 8-pin I/O, DIP-20
+K 6502 6529 SPI I/O
+F http://www.6502.org/documents/datasheets/mos/mos_6529_spi.pdf
+$ENDCMP
+#
 $CMP 65CE02
 D 6502 8-bit CMOS Microprocessor, 64K, DIP-40
 K 6502 65CE02 CPU uP
diff --git a/65xx.lib b/65xx.lib
index 277ed78..340c342 100644
--- a/65xx.lib
+++ b/65xx.lib
@@ -790,6 +790,152 @@ X PA7 9 600 400 200 L 50 50 1 1 B
 ENDDRAW
 ENDDEF
 #
+# 6523
+#
+DEF 6523 U 0 40 Y Y 1 F N
+F0 "U" -400 1300 50 H V L CNN
+F1 "6523" 0 0 50 V V C CNN
+F2 "" 0 150 50 H I C CNN
+F3 "" 0 150 50 H I C CNN
+ALIAS 6525
+$FPLIST
+ DIP-40_W15.24mm*
+$ENDFPLIST
+DRAW
+S -400 1250 400 -1250 0 1 0 f
+X VSS 1 0 -1450 200 U 50 50 1 1 W
+X PB0 10 600 350 200 L 50 50 1 1 B
+X PB1 11 600 250 200 L 50 50 1 1 B
+X PB2 12 600 150 200 L 50 50 1 1 B
+X PB3 13 600 50 200 L 50 50 1 1 B
+X PB4 14 600 -50 200 L 50 50 1 1 B
+X PB5 15 600 -150 200 L 50 50 1 1 B
+X PB6 16 600 -250 200 L 50 50 1 1 B
+X PB7 17 600 -350 200 L 50 50 1 1 B
+X ~CS 18 -600 500 200 R 50 50 1 1 I L
+X R/~W 19 -600 -200 200 R 50 50 1 1 I
+X PA0 2 600 1150 200 L 50 50 1 1 B
+X VDD 20 0 1450 200 D 50 50 1 1 W
+X ~RST 21 -600 1100 200 R 50 50 1 1 I L
+X RS2 22 -600 100 200 R 50 50 1 1 I
+X RS1 23 -600 200 200 R 50 50 1 1 I
+X RS0 24 -600 300 200 R 50 50 1 1 I
+X PC0 25 600 -450 200 L 50 50 1 1 B
+X PC1 26 600 -550 200 L 50 50 1 1 B
+X PC2 27 600 -650 200 L 50 50 1 1 B
+X PC3 28 600 -750 200 L 50 50 1 1 B
+X PC4 29 600 -850 200 L 50 50 1 1 B
+X PA1 3 600 1050 200 L 50 50 1 1 B
+X PC5 30 600 -950 200 L 50 50 1 1 B
+X PC6 31 600 -1050 200 L 50 50 1 1 B
+X PC7 32 600 -1150 200 L 50 50 1 1 B
+X D0 33 -600 -400 200 R 50 50 1 1 B
+X D1 34 -600 -500 200 R 50 50 1 1 B
+X D2 35 -600 -600 200 R 50 50 1 1 B
+X D3 36 -600 -700 200 R 50 50 1 1 B
+X D4 37 -600 -800 200 R 50 50 1 1 B
+X D5 38 -600 -900 200 R 50 50 1 1 B
+X D6 39 -600 -1000 200 R 50 50 1 1 B
+X PA2 4 600 950 200 L 50 50 1 1 B
+X D7 40 -600 -1100 200 R 50 50 1 1 B
+X PA3 5 600 850 200 L 50 50 1 1 B
+X PA4 6 600 750 200 L 50 50 1 1 B
+X PA5 7 600 650 200 L 50 50 1 1 B
+X PA6 8 600 550 200 L 50 50 1 1 B
+X PA7 9 600 450 200 L 50 50 1 1 B
+ENDDRAW
+ENDDEF
+#
+# 6526
+#
+DEF 6526 U 0 40 Y Y 1 F N
+F0 "U" -400 1300 50 H V L CNN
+F1 "6526" 0 0 50 V V C CNN
+F2 "" 0 150 50 H I C CNN
+F3 "" 0 150 50 H I C CNN
+$FPLIST
+ DIP-40_W15.24mm*
+$ENDFPLIST
+DRAW
+S -400 1250 400 -1250 0 1 0 f
+X VSS 1 0 -1450 200 U 50 50 1 1 W
+X PB0 10 600 200 200 L 50 50 1 1 B
+X PB1 11 600 100 200 L 50 50 1 1 B
+X PB2 12 600 0 200 L 50 50 1 1 B
+X PB3 13 600 -100 200 L 50 50 1 1 B
+X PB4 14 600 -200 200 L 50 50 1 1 B
+X PB5 15 600 -300 200 L 50 50 1 1 B
+X PB6 16 600 -400 200 L 50 50 1 1 B
+X PB7 17 600 -500 200 L 50 50 1 1 B
+X ~PC 18 600 -800 200 L 50 50 1 1 O V
+X TOD 19 -600 900 200 R 50 50 1 1 I C
+X PA0 2 600 1100 200 L 50 50 1 1 B
+X VCC 20 0 1450 200 D 50 50 1 1 W
+X ~IRQ 21 -600 700 200 R 50 50 1 1 C V
+X R/~W 22 -600 -200 200 R 50 50 1 1 I
+X ~CS 23 -600 500 200 R 50 50 1 1 I L
+X ~FLAG 24 600 -700 200 L 50 50 1 1 I L
+X ϕ2 25 -600 1000 200 R 50 50 1 1 I C
+X D7 26 -600 -1100 200 R 50 50 1 1 B
+X D6 27 -600 -1000 200 R 50 50 1 1 B
+X D5 28 -600 -900 200 R 50 50 1 1 B
+X D4 29 -600 -800 200 R 50 50 1 1 B
+X PA1 3 600 1000 200 L 50 50 1 1 B
+X D3 30 -600 -700 200 R 50 50 1 1 B
+X D2 31 -600 -600 200 R 50 50 1 1 B
+X D1 32 -600 -500 200 R 50 50 1 1 B
+X D0 33 -600 -400 200 R 50 50 1 1 B
+X ~RES 34 -600 1100 200 R 50 50 1 1 I L
+X RS3 35 -600 0 200 R 50 50 1 1 I
+X RS2 36 -600 100 200 R 50 50 1 1 I
+X RS1 37 -600 200 200 R 50 50 1 1 I
+X RS0 38 -600 300 200 R 50 50 1 1 I
+X SP 39 600 -1100 200 L 50 50 1 1 B
+X PA2 4 600 900 200 L 50 50 1 1 B
+X CNT 40 600 -1000 200 L 50 50 1 1 B C
+X PA3 5 600 800 200 L 50 50 1 1 B
+X PA4 6 600 700 200 L 50 50 1 1 B
+X PA5 7 600 600 200 L 50 50 1 1 B
+X PA6 8 600 500 200 L 50 50 1 1 B
+X PA7 9 600 400 200 L 50 50 1 1 B
+ENDDRAW
+ENDDEF
+#
+# 6529
+#
+DEF 6529 U 0 40 Y Y 1 F N
+F0 "U" -400 700 50 H V L CNN
+F1 "6529" 0 0 50 V V C CNN
+F2 "" 0 -450 50 H I C CNN
+F3 "" 0 -450 50 H I C CNN
+$FPLIST
+ DIP-20_W7.62mm*
+$ENDFPLIST
+DRAW
+S -400 650 400 -650 0 1 0 f
+X R/~W 1 -600 -500 200 R 50 50 1 1 I
+X VSS 10 0 -850 200 U 50 50 1 1 W
+X D7 11 -600 -200 200 R 50 50 1 1 B
+X D6 12 -600 -100 200 R 50 50 1 1 B
+X D5 13 -600 0 200 R 50 50 1 1 B
+X D4 14 -600 100 200 R 50 50 1 1 B
+X D3 15 -600 200 200 R 50 50 1 1 B
+X D2 16 -600 300 200 R 50 50 1 1 B
+X D1 17 -600 400 200 R 50 50 1 1 B
+X D0 18 -600 500 200 R 50 50 1 1 B
+X ~CS 19 -600 -400 200 R 50 50 1 1 I L
+X P0 2 600 500 200 L 50 50 1 1 B
+X VDD 20 0 850 200 D 50 50 1 1 W
+X P1 3 600 400 200 L 50 50 1 1 B
+X P2 4 600 300 200 L 50 50 1 1 B
+X P3 5 600 200 200 L 50 50 1 1 B
+X P4 6 600 100 200 L 50 50 1 1 B
+X P5 7 600 0 200 L 50 50 1 1 B
+X P6 8 600 -100 200 L 50 50 1 1 B
+X P7 9 600 -200 200 L 50 50 1 1 B
+ENDDRAW
+ENDDEF
+#
 # 8502
 #
 DEF 8502 U 0 40 Y Y 1 F N