I made another Amiga 500 Memory Expansion - replica A501 r6

Life was incomplete after making a release 5 A501, so I did the release 6. Here is is :) Have your CAKE and eat it too! Don't use a LIR2032 in this build. Instead use a CR2032 and substitute R913 with a diode. My Links (supports this channel) My eBay Store (Amiga VGA/HDMI Adapters, Optical Mice, Gotek Floppy, and more) = http://www.ebay.com/sch/jond5/m.html Buy anything on Amazon with this link to help me (no extra cost) = https://amzn.to/3drPhhp My Website = http://www.retrofriends.com PCB Stand = https://amzn.to/3gEG6f7 BOM (I suggest getting sockets for all IC's too) (4)256kx4 DRAM chips 150ns (4256-15, 4c256-15) DIP-20 (1) 74LS163 logic DIP-16 (1) 74LS86 logic DIP-14 (1) 74LS27 logic DIP-14 (1) M6242 Clock Chip DIP-18 (from ME! = http://www.ebay.com/sch/jond5/m.html) CR2032 Batttery Holder (https://amzn.to/3suW6Tr) CR2032 Coin Battery (https://amzn.to/3t6MVc0) (2) DIODE, ZENER. 1/2W, 10v+ 1N914 (3) 10k ohm resistors (2) 470 ohm resistor (substiute one of these for a diode if using a CR2032) (3) SIP-10 resistor network, 68ohm, isolated *** All ceramic caps should be axial package if you want it to look like factory a501 (7) 330nF Ceramic Capacitors (1) 22pF Ceramic capacitor (1) 100nF Cermaic Capacitor (1) 4.7uF 10v+ Electrolytic Capacitor (2) 100uF 10v+ Electrolytic Capacitors (1) 6.8-45pF Variable Capacitor (Digikey, 2447-GKG50015-ND) (1) CRYSTAL, 32.768KHz (https://amzn.to/37UOOOC) (2) Header_Female_2x20_2.54mm (DigiKey, A34311-ND) - Requires cutting/gluing or (1) Samtec 56 position 2x28 right angle (Mouser. 200-BCS128LDHE) - no mod needed