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Photos of Microbee and other vintage Australian microcomputers

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my Dream 6802


Dream-6800.JPG

4 files, last one added on Aug 31, 2013
Album viewed 133 times
Dream 6802 replica project


dream682_pcb.jpg

This is several screenshots of the artwork for my Dream 6802 replica project

5 files, last one added on Aug 31, 2013
Album viewed 5570 times
pbuff 3.2 rev E 256K


pbuff_rev_e_inside.jpeg

6 files, last one added on Oct 02, 2015
Album viewed 66 times
 

3 albums on 1 page(s)

Random files - apple2's Gallery
dream682_pcb.jpg
 Dream 6800/6802 PCB design1023 viewsdesign can accommodate 6800/6802, 2708/2716/2732, 6875/74123/substitute clock and all known options and fixes from numerous Dreamer and EA articles. artwork completed but untested.
No hi-res option without hacking.
pbuff_rev_e_inside.jpeg
 pbuff 3.2 rev E inside layout with C2P1 daughter board201 viewsthis is the layout I used in my pbuff 3.2 rev E. note there are several main parts missing. no transformer, no Z80 CPU. this will be reinstalled into a new standard plastic case during the restore. the layout will be rotated 90 deg clockwise like the original and the centronics plugs will be flipped upside down to remove the twist in the ribbon inside the case. a db25 will be added for the output instead of directly running the ribbon out between the centronics plugs on the back panel,
Dream6802_RIE_top_Xray2~0.jpg
 Dream 6802 PCB top scan745 viewsX-ray like scan of the top side of the RIE 6802 PCB.
pbuff_oohey_gooey.jpeg
 pbuff 3.2 oohey gooey in ROM177 viewsDon McKenzie's little ditty hiding inside the ROM dump.
pbuff_front_panel.jpeg
 pbuff 3.2 rev E front panel layout185 viewsthis is the front panel layout I used for my pbuff 3.2. this is not the recommended case, but a metal one.
when I restore it the green LED will be removed, and a red illuminated mains power switch installed instead. the layout will be more like the original; the right hand knob is a rotary A-B switch to select which computer input to use. I might use a toggle switch during restore because this one is a bit mushy now.
pbuff_32_4K_rom_page1_screen.jpeg
 screen shot of pbuff 3.2 4K page 1421 viewsthis is a screen shot from my EPROM reader showing the content of page 1 of the PBUFF 3.2 4K EPROM. I don't actually recall where I got this 4K EPROM from because it's been ~30 years since I built it. it might have been removed during an update to 8K EPROM.
Dreamkbd4.jpg
 Dream 6800/6802 hex keypad PCB design710 viewskeyboard can use vintage keypad from original, or individual cherry mx key switches. optionally cut off speaker and socket half for a smaller PCB. optional position for Reset and Fn keys. also can be wired for Fn-Reset to prevent accidental Reset. considering more key switch type options.
Dream-6800.JPG
 Dream 6802 Case301 viewsThis is the Dream 6802 I bought on eBay in 2008, originally in non-working condition.

Last additions - apple2's Gallery
pbuff32_rom_screen.jpeg
 pbuff 3.2 4K ROM screen with version details200 viewsthis is from a 4K ver 3.2 ROM at the page starting from $0E00 in the upper half of the 4K EPROM.
the lower half of the EPROM is ver 2.2.Oct 02, 2015
pbuff_rev_e_inside.jpeg
 pbuff 3.2 rev E inside layout with C2P1 daughter board201 viewsthis is the layout I used in my pbuff 3.2 rev E. note there are several main parts missing. no transformer, no Z80 CPU. this will be reinstalled into a new standard plastic case during the restore. the layout will be rotated 90 deg clockwise like the original and the centronics plugs will be flipped upside down to remove the twist in the ribbon inside the case. a db25 will be added for the output instead of directly running the ribbon out between the centronics plugs on the back panel,Oct 02, 2015
pbuff_oohey_gooey.jpeg
 pbuff 3.2 oohey gooey in ROM177 viewsDon McKenzie's little ditty hiding inside the ROM dump.Oct 02, 2015
pbuff_front_panel.jpeg
 pbuff 3.2 rev E front panel layout185 viewsthis is the front panel layout I used for my pbuff 3.2. this is not the recommended case, but a metal one.
when I restore it the green LED will be removed, and a red illuminated mains power switch installed instead. the layout will be more like the original; the right hand knob is a rotary A-B switch to select which computer input to use. I might use a toggle switch during restore because this one is a bit mushy now.Oct 02, 2015
pbuff_C2P1_back_panel.jpeg
 pbuff 3.2 C2P1 back panel layout170 viewsthis is the back panel of my pbuff 3.2 with C2P1 centronics connectors. the rusted connectors will be replaced when I restore it. the small button is the test button and will be moved to the front during the restore.Oct 02, 2015
pbuff_32_4K_rom_page1_screen.jpeg
 screen shot of pbuff 3.2 4K page 1421 viewsthis is a screen shot from my EPROM reader showing the content of page 1 of the PBUFF 3.2 4K EPROM. I don't actually recall where I got this 4K EPROM from because it's been ~30 years since I built it. it might have been removed during an update to 8K EPROM.Oct 02, 2015
Dream_PS2_prototype.jpg
 prototype PSU for Dream 6800/68025865 viewshome made PCB with +5V 3A, -5V 1A, 12V 1A regulators. +5V uses 2576T-ADJ. tested on bench with 2A load with no signs of overheating. standard 78xx for the other voltages.
new version will have additional -12V with only slightly larger PCB.Aug 31, 2013
Dreamkbd4.jpg
 Dream 6800/6802 hex keypad PCB design710 viewskeyboard can use vintage keypad from original, or individual cherry mx key switches. optionally cut off speaker and socket half for a smaller PCB. optional position for Reset and Fn keys. also can be wired for Fn-Reset to prevent accidental Reset. considering more key switch type options.Aug 31, 2013