SGB: Unit #1 [jrra]

Stamp on case
22B

Mainboard

Board type
SGB-N-01
Manufacture date
April/1994
Circled letter(s) on board
Y
Letter at top right
B

Chips

ChipTypeManufacturerDateLabel
U1CPUSGB-CPU 01SharpWeek 16/1994SGB-CPU-01 © 1994 Nintendo Ⓜ 1989 Nintendo JAPAN 9416 1 D
U2ICD2ICD2-N????Week 15/1994Nintendo ICD2-N 9415KX226 D93115
U3Work RAMLH52A64N-TLLSI LogicWeek 13/1994LH52A64N-TL LSI LOGIC JAPAN D413 0M C
U4Work RAMLH52A64N-TLLSI LogicWeek 13/1994LH52A64N-TL LSI LOGIC JAPAN D413 0M C
U5ROMSYS-SGB-NTSharpWeek 16/1994SYS-SGB-NT © 1994 Nintendo LH532KN8 9416 D
U6CICF411ASharpWeek 11/1994F411A © 1990 Nintendo 9411 a