Jupiter ACE

File: Wed Mar 30 23:54:55 2011 AceUser_3_1.pdf (1072997 bytes)
File: Wed Mar 30 23:55:05 2011 AceUser_3_2.pdf (598408 bytes)
File: Tue Jun 21 20:47:13 2011 BOM.txt (1031 bytes)
File: Thu Mar 24 20:42:53 2011 Jupiter Ace Resource Site - Hardware Project 96k Ram Pack for the Jupiter Ace.pdf (284498 bytes)
Douglas W. Goodall at 10:28 pm on Mar 28, 2011:

Interesting. The build would be easier if there was a picture of the solder side after the cuts and before wires were added. It is a hard to see what is going on beneath the wires. The code of the memory test is interesting also. It does test every location by writing 0 through 255 into each location and reading it back. This actually is not good enough. If any of the data lines or address lines got swapped, this test would not detect it. There is a collection of easy tests, walking ones for instance, that test for shorted data lines. Overall it does look like a fun project for someone that wants to play with more memory. Ah forth, drop dump flush.

File: Thu Mar 24 23:18:45 2011 Jupiter_Ace_manual.pdf (2528992 bytes)
File: Mon Feb 21 19:07:49 2011 PCB.pdf (248189 bytes)
File: Mon Apr 18 19:53:30 2011 Top_layer.pdf (24535 bytes)
File: Thu Mar 31 15:40:36 2011 footprint.pdf (20371 bytes)
Douglas W. Goodall at 11:08 pm on Mar 28, 2011:

Where are resistor networks 1 & 2?
I don't see them on the board.

Sergio Gimenez at 3:34 pm on Mar 31, 2011:

Hi Douglas , resistor networks are at the center of the board.

Best regards.

Sergio.

File: Tue Jun 21 20:48:06 2011 jupiter_MODIFIED.pdf (95817 bytes)
File: Mon Feb 21 19:07:40 2011 jupiter_ORIGINAL.pdf (62864 bytes)
File: Mon Feb 21 19:07:42 2011 jupiter_rom.zip (6815 bytes)
File: Wed Mar 30 21:31:06 2011 key_pcb.pdf (72158 bytes)