Gd MEGA-65c02 proto

baldengineer·Mega-IIe·kicad files/gd MEGA-65c02 proto pcb/gd MEGA-65c02 proto pcb.kicad_pcb

Gd MEGA-65c02 proto PCB layout, top view — open source board by baldengineer

About the Gd MEGA-65c02 proto PCB

Gd MEGA-65c02 proto is an open source PCB design by baldengineer, published on GitHub under the MIT license. It is a 4-layer board measuring 98.8 × 100 mm, with 56 components from 35 distinct parts.

Other key parts include the w65c02s, Apple_MEGA_II, 74HCT245, 27C512 and DRAM64KX4. By type, the board carries 13 resistors, 12 connectors, 11 capacitors, 9 ICs, 5 test points and 2 diodes.

From the project

Using the Mega II from a IIgs to make a Apple IIe compatible computer: The Mega IIe!

The Proto PCBs are boards to prototype an IIe from the IIgs ASICs. Eventually, these will be condensed to a single board.

It connects to both the VGC and 6502 boards. The VGC connects with a 40-pin cable, like an IDE cable. The 6502 connects with a couple of ribbon cables.

The VGC also generates the 14 MHz clock from a 28 MHz oscilliator. (It is not clear yet which clocks the MEGA-II generates and which the VGC does.)

Main components on the Gd MEGA-65c02 proto

w65c02s Apple_MEGA_II 74HCT245 27C512 DRAM64KX4

Gd MEGA-65c02 proto bill of materials (BOM)

56 components, 35 distinct parts.

Qty	Part	Footprint	Refs
1	w65c02s	TQFP-44_10x10mm_P0.8mm	U1
1	Apple_MEGA_II	PLCC-84_THT-Socket	U2
2	74HCT245	SOIC-20W_7.5x12.8mm_P1.27mm	U3, U4
1	27C512	DIP_Socket-28_W11.9_W12.7_W15.24_W17.78_W18.5_3M_228-1277-00-0602J	U5
4	DRAM64KX4	DIP-18_W7.62mm_Socket_LongPads	U6, U7, U8, U9
1	BC817	SOT-23	Q1
1	MCSJK-6NC1-14.31818-25-B 14.31818MHz	Oscillator_SMD_SeikoEpson_SG8002CA-4Pin_7.0x5.0mm_HandSoldering	X1
1	Pwr	PinHeader_2x04_P2.54mm_Vertical-NOSILK	J1
1	CTRL2	PinHeader_2x05_P2.54mm_Vertical	J2
1	Addr_Main_Data	PinHeader_2x16_P2.54mm_Vertical	J3
1	CTRL1	PinHeader_2x05_P2.54mm_Vertical	J4
1	Slot_Maker	PinHeader_2x05_P2.54mm_Vertical	J5
1	Aux Data_La	PinHeader_2x05_P2.54mm_Vertical	J6
1	CLKS	PinHeader_2x04_P2.54mm_Vertical	J7
1	14M_SEL	PinHeader_1x02_P2.54mm_Vertical	J8
1	PWR	PinHeader_1x04_P2.54mm_Vertical	J9
1	XY	PinHeader_2x02_P2.54mm_Vertical	J10
1	14M Enable	PinHeader_1x03_P2.54mm_Vertical	J11
1	RGB Bin	PinHeader_2x04_P2.54mm_Vertical	J12
1	Buzzer	12mm_Piezo_Buzzer	BZ1

Show 15 more

Qty	Part	Footprint	Refs
1	RESET	SW_Push_1P1T_NO_CK_KSC6xxJ	SW1
2	TestPoint_Harwin	Harwin-S1751-46-Test-Point	TP1, TP2
3	TestPoint	Harwin-S1751-46-Test-Point	TP3, TP4, TP5
1	PWR	LED_1206_3216Metric	D1
1	SNDZ	LED_1206_3216Metric	D2
8	1uF	C_0805_2012Metric	C1, C2, C3, C4, C8, C9, C10, C11
1	10uF	C_0805_2012Metric	C5
1	100nF	C_0805_2012Metric	C6
1	100uF	CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder	C7
4	4k7	R_0805_2012Metric	R1, R4, R5, R10
2	3k3	R_0805_2012Metric	R2, R3
2	1k	R_0805_2012Metric	R6, R9
1	220	R_0805_2012Metric	R7
1	10k	R_0805_2012Metric	R8
3	100	R_Array_Convex_4x0612	RN1, RN2, RN3

Gd MEGA-65c02 proto design files

The KiCad project lives in the baldengineer/Mega-IIe repository on GitHub; these links point at the commit this page was built from.

Gd MEGA-65c02 proto: common questions

How big is the Gd MEGA-65c02 proto PCB?

The Gd MEGA-65c02 proto measures 98.8 × 100 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Gd MEGA-65c02 proto?

56 components, from 35 distinct parts. The full bill of materials is listed on this page.

Where can I download the Gd MEGA-65c02 proto design files?

From the baldengineer/Mega-IIe repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Gd MEGA-65c02 proto design in my own project?

Yes, under the terms of its MIT license, which baldengineer chose for the repository.

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