Clock are my weekness… ;) Some time I looking for atmel GAL atf16v8, but found this very simple clock and single side board. Of course I order this one. I think it should be good lessons for soldering for my old son. Yep, he is solder it in a hour. As clock it very bad (mostly because bad firmware with many drawbacks), but I left this clock in my collection....
Clone of original Jupiter ACE computer. This computer was a competitor to ZX81 and looks close, but from hardware reason doesnt use ULA and from software point of view use Forth instead of basic. I order clear PCB and start building by myself. Links Wikipedia article about this computer. Searle Grant site with instruction how to build jupiter. Photo clear pcb
Overview After I order Apple-1 PCB and start solder I understand I want to have Apple-2 too. It’s a bit interesting computer from usage point of view. Also this is result of Mike Willegal work. Most important complexity in this board is EPROM chips. Now its possible to use only original one. Anyway I will try to solder and run this board. BOM list in xls Photos My computer (progress) up
Overview SLAM128 is a replacement for the ULA in the ZX Spectrum. Fits ZX Spectrum 128 toastrack and Sinclair ZX Spectrum+2 (grey case). I order clean PCB It’s designed by Mark Smith Links firmware for cpld bom list to assemble board Photo slam clean pcb
Overview This instruction taked from forum maxiol BOM required to build this board. Firmware stm33 Firmware GAL Gerber files Config file az.ini example SD card content, example Driver azdrv sources. Booting instruction Turn on computer. Pull down and up after second ‘Restart’ flag Pull down and up after second ‘Run/Halt’ flag Random number and ‘@’ should be printed after. If not restart repeat steps from start. Enter 177226g Image 0 will be loaded....
Apple 1 ACI (Apple Cassette Interface). This is also result of reverse by Mike Willegal. Great work and looks close to original one. I was solder this pcb. BOM list in xls Schematic aci ACI prom Assembly manual from Mike Willegal in english Apple 1 cassette interface manual, original scan Photos Original front back My pcb up up
Overview Chineese chip tester TES200. Works ok, sometimes helps. But support small set of chips for testing. Thats make this device bad. Supported chips 40* 74* 7400, 7401, 7402, 7403, 7404, 7405, 7406, 7407, 7408, 7409, 7410, 7411, 7412, 7413, 7414, 7415, 7416, 7417, 7418, 7419 7420, 7421, 7422, 7424, 7425, 7426, 7427, 7428, 7430, 7432, 7433, 7434, 7435, 7436, 7437, 7438, 7439, 7440, 7442, 7443 7444, 7445, 7446, 7447, 7448, 7454, 7464, 7470, 7472, 7473, 7474, 7475, 7476, 7477, 7478, 7480, 7482, 7483, 7485, 7486 7487, 7489, 7494, 7495, 7496, 74101, 74102, 74103, 74107, 74108, 74109, 74112, 74113, 74125, 74126, 74128, 74130, 74132 74133, 74134, 74135, 74136, 74137, 74138, 74139, 74140, 74145, 74147, 74148, 74151, 74152, 74153, 74155, 74156, 74157 74158, 74160, 74161, 74163, 74164, 74165, 74166, 74171, 74173, 74174, 74175, 74176, 74177, 74180, 74182, 74190, 74191 74192, 74193, 74194, 74195, 74197, 74242, 74243, 74247, 74248, 74249, 74251, 74253, 74256, 74257, 74258, 74259, 74260 74266, 74279, 74280, 74283, 74290, 74293, 74295, 74298, 74350, 74352, 74353, 74365, 74366, 74367, 74368, 74375, 74378 74379, 74390, 74393, 74395, 74425, 74426, 74445, 74447, 74490, 74595, 74670...
I was order new born Apple 1 PCB. This is result of hard work by Mike Willegal, who re-create this pcb. Actually its looks very close to original one. I will try to solder and run this board. BOM list in xls Assembly manual from Mike Willegal in english User manual Apple basic, original scan Operation manual for Apple-1, original scan Many information about building, in russian Photos Original boards up...
Overview Dated 1992y works perfectly! Several mods I change PSU from standard 42V to non original new one modern 220V. Video cable also altered to use SCART connector on monitor side. (Information about this is FAQ below) Links UKNC programms archive Archive Another FAQ Electronic mc0511 Another one FDC controller Photo
Overview I was order Macintosh LC. It was sold as worked computer, but based on photo I was see some capacitors was leaked. I hope it doesn’t affect and plan to repair it after, but … computer doesn’t work when I plug power and turn it on. No worries, I say, lets clean motherboard and recap it. Oh life is bad game, plans and reality sometimes completely different. After cleaning motherboard I found some legs on EGRET and 8L08A dc-dc convertor for PDS bus was absent due to capacitors acid....