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1. Sys0800 Sys0800 Public

   VHDL implementation of vintage TMS0800 calculator chip

   VHDL 6 3

2. sys9080 sys9080 Public

   Simple system built around VHDL implementation of Am9080 8-bit CPU based on 29XX bit-slice series of devices, as described here: https://en.wikichip.org/w/images/7/76/An_Emulation_of_the_Am9080A.pdf

   VHDL 6 1

3. am9511 am9511 Public

   Spin object to drive Am9511 vintage floating point co-processor, plus test / demo / sample object

   Propeller Spin 3

4. MicroCodeCompiler MicroCodeCompiler Public

   https://hackaday.io/project/172073-microcoding-for-fpgas

   C# 10

5. TMS9918A-SpinDemo TMS9918A-SpinDemo Public

   Spin object to drive TMS9918A (or compatible, such as F18A) Video Display Processor (also here: http://obex.parallax.com/object/864 )

   Propeller Spin 2

6. Sys_180X Sys_180X Public

   Simple computer using CDP1802 compatible core written using the "mcc" Micro-code compiler (also on my github)

   VHDL 5