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Forum Index : Microcontroller and PC projects : Bare minimum 144 pin computer
| Author | Message | ||||
| gadgetjack Senior Member  Joined: 15/07/2016 Location: United StatesPosts: 127 |
I have a small breakout board with the 144 pin cpu on it. What is the bare minimum of pins used to make it run a vga monitor and a keyboard? I tried to read the schematic for the 144 pin board , but it gets a bit run together on my monitor and hard to read. I have built from the 24 pin to 64 pin boards and love them. Have not had this much fun since college electronics. Thank you all for the great projects. Jack |
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CaptainBoing Guru  Joined: 07/09/2016 Location: United KingdomPosts: 1985 |
checkout matherp's schematic HERE |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8592 |
Taken from the netlist - may help. Power pins to the CPU as per the manual J3 is the VGA connector Net "VGA_BLU_OUT" IC1.48 R21.2 Net "VGA_BLU_OUT_R" R21.1 D4.2 J3.3 Net "VGA_GRN_OUT" IC1.47 R20.2 Net "VGA_GRN_OUT_R" R20.1 D2.2 J3.2 Net "VGA_HSYNC" IC1.112 J3.13 IC1.24 IC1.90 IC1.62 Net "VGA_RED_OUT" IC1.49 R22.2 Net "VGA_RED_OUT_R" R22.1 D1.2 J3.1 Net "VGA_VSYNC" IC1.26 J3.14 Net "KBCLK" KBD.5 R16.2 IC1.129 Net "KBDAT" KBD.1 R15.2 IC1.130 Net "5V" KBD.4 R15.1 R16.1 Net "GND" KBD.3 J3.5 J3.6 J3.7 J3.8 J3.10 D1.1 D2.1 D4.1 |
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| gadgetjack Senior Member Joined: 15/07/2016 Location: United StatesPosts: 127 |
Thanks guys! I didn't realize the new manual had all the pin-outs in it. |
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