Apple manual 1Block diagram of the PowerBook 165c computer

C H A P T E R 1

Hardware

Figure 1-1Block diagram of the PowerBook 165c computer

256K x 16

DRAM

Flat-panel

display

		A31–0		D15–0
			Pangola		WD90C26	WD90C55
				A18–0
			bus
		D31–16
			interface
						A12–9
						D31–24	VIA1	RTC
		D31-24	Video
Address bus
		A23-0	controller	RAMDAC
	A31–0								Monitor
CPU						OSC
					CLUT
	Data bus								connector
MC68030
	D31–0	D31-16			Video
						A20–2
33 MHz					RAM						RAM
											expansion
		A20-0	Address			D31–0					connector
			buffers
						A20–2
	A4–1						PSRAM
						D31–0
		D31–0
							4 MB
FPU
MC68882						D31–0				Trackball
							ROM
						A19–2
			I/O data						Apple Desktop
33 MHz	Data bus	D31–24					1 MB
			buffer
	D31–0			D31–24						Bus port
		D25, 24				Power
						Manager		Keyboard
			CPU GLU
		A31–13, 1, 0						controller		Keyboard
Battery charger
and power					D31–24				Internal modem
supply
										connector
Battery			Misc. GLU			Channel A		Drivers	Port A		Serial
									(modem)
								and	Port B		ports
		A6–4, 2, 1				Channel B receivers
			Combo						(printer)
					D31–24		Internal floppy
			SCC/SCSI
					D31–24		disk connector
		A12–9
							Internal hard disk			External
			SWIM
							connector			SCSI port
									Sound input jack
						MUX		Internal microphone
		A11–0	Enhanced			DFAC					External
											sound jack
			ASC
						Filter/amp				Internal
										speaker

4Features