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serial16c550 — A try to make a pc-xt boar with SRAM | Open App Note

my_pcxt

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A try to make a pc-xt boar with SRAM

Components (15)

Reference	Value	Description
U1	16550
U2	DTE
U3	74LS04
U4	74LS138
U5	74LS08
U7	74LS32
C2	100pF
C2VS+?,C2VS+?,C2VS-?,C2VS-?,C21-C23	1uF
C3-C7	100nF
D3-D13,D15,D16	1N5819
J1	DE9_Plug
R1,R2	1k,820R
R1,R4	820R
X1	4.915200MHz
Y1	7.372800MHz

my_pcxt schematic

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my_pcxt board