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FolderTitleDescriptionSizeAsset
/Simmons Memory Cart Redesign/003.JPGtop image of original pcb475.4 KBOpen
/Simmons Memory Cart Redesign/004.JPGbottom image of original pcb. New design replaces the nicads and resistor mess.429.8 KBOpen
/Simmons Memory Cart Redesign/MEM CART SIMMONS ORIGINAL.pdfRedrawn original design from Simmons49.7 KBOpen
/Simmons Memory Cart Redesign/MEM_CART_NEW_V1_02.pdfNew redesigned cartridge. Backup via lithium battery, resistor networks to replace "gludged" mess on bottom of original PCBs50.1 KBOpen
/Simmons Memory Cart Redesign/PCB V1-02.pdfpcb used in first 40 carts64.4 KBOpen
/Simmons Memory Cart Redesign/PCB V1-04.pdffixed layout to rectify problem with 2 tracks65.5 KBOpen
/Simmons Memory Cart Redesign/WP_20130818_005.jpgnew pcb937.9 KBOpen
/Simmons Memory Cart Redesign/memory pack.pdfscan of original simmons circuit - has a couple of things missing that were discovered during reverse engineering of pcb.1.6 MBOpen