chore: remove old docs, clean up font stuff

docs/6809-sn74ls612_timing.md

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-# Motorola 6809 and TI SN74LS612 Timing
-
-## Motorola 6809 Timing
-Dual phase clock, E and Q. Staggered by half a clock. 
-1, 1.5, or 2 mHz. Nanosecond timing will be listed for all 3 speeds.
-
-* On Q rise, address and R/-W output is valid.
-* On E rise, data output is valid.
-* Time between Q rise and E rise is (approx) minimum 200/130/80ns and max 250/166/125ns.
-	* Time between address and R/-W output to data output.
-* On E fall, data input is read. Address and R/-W output become invalid.
-	* Data input must be valid for minimum 80/60/40ns before E fall.
-	* Output data on Q fall to ensure data input is valid.
-
-## TI SN74LS612 Timing
-Async
-
-### Write mode:
-
-* -Strobe occurs to perform write.
-* -Strobe pulse must be at least 75ns.
-* Data must be valid 75ns before -strobe fall.
-* -CS, R/-W, RS must be low at least 20ns before -strobe fall.
-* -CS, R/-W, RS, Data must be valid at least 20ns after -strobe rise.
-
-## Interface
-
-### 6809 Write to SN74LS612
-
-
-
-
-## Sources
-
-* Motorola MC6809 Datasheet, undated
-* Motorola MC6809E Datasheet, 1984
-* TI SN54LS610, SN54LS612, SN74LS610 THRU SN74LS613 Datasheet, 1981-1988

docs/jameco.txt

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-RAM:
-https://www.jameco.com/z/HM62256LP-70-Major-Brands-IC-62256LP-70-Low-Power-CMOS-SRAM-256K-Bit-32Kx8-70ns_82472.html
-
-UART:
-https://www.jameco.com/z/PC16550DN-Major-Brands-Universal-Asynchronous-Receiver-Transmitter-with-FIFOs-DIP-40_27596.html
-
-Not available on Jameco: HD63C09, 28C256, uPD72020, VT82C42, 74LS612.
-eBay may be a better choice.
-
-12Mhz Passive Crystal 20pf:
-https://www.jameco.com/z/TQR49S12M0000A2040-Jameco-ValuePro-12-000MHz-HC49-Us-20pF-Crystal_325198.html
-
-1.8432 MHz Full Can Crystal Oscillator:
-https://www.jameco.com/z/MX045-3C-1M843200-JVP-Jameco-ValuePro-1-8432-MHz-Full-Can-Crystal-Oscillator_27879.html

font/README.md

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+# Font
+
+An 8x8 font. Also a 16x16 temp logo.