Page 22 of 31. Version 1.03 September 2012
Microbee Premium Plus+ | Construction Manual
10. Bill of materials / Parts list
Microbee Premium Plus Baseboard (8501-04) Bill of Materials
IC's
Manufacturers
Part#
Description
Component Ref ID's
Qty
Z80PIO
Z80 Parallel input/output chip - DIP40
IC9
1
74ALS574
Octal Latch DIP20
IC32, 36, 37, 38, 39
5
74LS541
Unidirectional Buffer 8 bit DIP20
IC40, 34, 41, 28
4
74LS00
Quad 2 input NAND gate DIP 14
IC47
1
74LS04
Hex inverting buffer DIP 14
IC55, 74, 67, 6
4
74HCT08
Quad 2 input AND gate HC DIP14
IC63
1
74LS32
Quad 2 input OR gate DIP14
IC72, 48, 58, 78, 24, 4
6
Z80CPU
Z80 Central processor Unit
IC33
1
74LS11
Triple 3 input AND gate DIP14
IC56
1
74LS161
BCD Decade counter DIP16
IC64
1
74LS74
Dual D flip-flop DIP14
IC73, 25, 49, 57
4
74LS10
Triple 3 input NAND gate
IC65
1
74LS139
Dual 1of4 decoder DIP16
IC61
1
74LS645/245
Octal Buffer bi-directional DIP20
IC17, 26, 29, 30, 31
5
74HC32
Quad 2 input OR gate HC DIP14
IC66
1
7407/17
Hex buffer O/C DIP14
IC75
1
74LS273
Octal transparent Latch DIP20
IC27
1
74LS157
Quad 2-1 Mux DIP16
IC35, 43, 44, 45, 46, 11, 12, 13
8
74LS166
8 bit shift reg Parallel in Ser out DIP 16
IC42
1
FONTROM / 2532
Microbee Dual Font ROM
IC50
1
74LS174
Hex D Latch DIP16
IC59
1
74LS86
Quad 2 input XOR gate
IC69
1
74LS08
Quad 2 input AND gate DIP14
IC76, 68, 5
3
74LS573
Octal Latch DIP20
IC18
1
CY62256
32K x 8bit Static Ram
IC51
1
CY7C128
2K x 8bit Static Ram
IC19, 20, 21
3
GOLD_PAL
Microbee Premium PAL
IC62
1
74LS138
1of8 decoder DIP16
IC71
1
74LS175
Hex Latch DIP16
IC77
1
74LS156
3to8 encoder DIP16
IC7
1
74HC151
1of8 mux DIP16
IC3
1
CA3140
Op amp
IC80
1
SY6545-1
CRT controller DIP 40
IC1
1
7805
5 v regulator TO-220
IC8, 79
2