MiTAC 8355 service manual ↑ Pull High ↓ Pull Low →3V Level shift

8355 N/B MAINTENANCE

Continued to the previous table

Port 9 TTL input voltage (input high min=2v, input low max=0.8v)
P90/IRQ2/ESC2	25	PORT90	T↑	I/O	I/O	I/O	Keep
P91/IRQ1/EIOW	24	PORT91	T↑	I/O	I/O	I/O	Keep
P92/IRQ0	23	H8/T CLK	T↑	I/O	I/O	I/O	Keep	need pull high
P93/RD	22	RSMRST	T↑	I/O	I/O	I/O	Keep
P94/WR	19	RESERVE	T↑	I/O	I/O	I/O	Keep	need pull high
P95/AS	18	T DATA	T↑	I/O	I/O	I/O	Keep	need pull high
P96/0	17	H8_ENABKL	T↑	I	I	I	T	Read H8 send A20gate status
P97/WAIT/SDA	16	BAT DATA	T↑	I/O	I/O	I/O	Keep	SM BUS clock need pull high
								5→3V

↑Pull High ↓ Pull Low

5→3V Level shift

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