9-19-25:

1) As of 8-1-2024 new members will be moderated due to excessive SPAM being generated within 24 hours of signing up by some accounts. If the first couple of messages are on point then the member will then have immediate posting privilege on future messages.

2) If you currently have immediate posting privilege and don't see your new message posted then wait 24 hrs or so before re-posting as it is probably waiting for moderator approval in which a moderator will address. For some reason this happens at times and flags it for moderation.

3) Google has moderation bots of its own and will delete messages based on certain criteria. Nobody knows why. Try and repost as needed.

This group is a "virtual pub" (no team colours) open to anyone for the discussion of topics focused on but not exclusive to vintage or retro computing.

Use it to discuss ideas, share information, show off achievements, learn, teach, hang-out.

All levels of expertise are welcome, from "What's a Z80?" to "I design chips for Intel..."

Examples of possible topics (by no means exclusive)

retro/modern kits and peripherals: SC1xx, RCBUS, RC2014, LINC80, YAZ180 etc
Early home computers: Apple II, Commodore 64, TRS-80, ZX-80/81 etc
Specific chips: MPUs, MCUs (8051, TMS1000) , CPLD, FPGA etc
Bus standards: serial, parallel, SPI, i2C, ethernet etc
Operating Systems: CP/M, FUZIX, Z-System, etc
Programming languages: Assembler, C, PASCAL, FORTH, BASIC etc
ROM Monitors: Grant's Monitor, ROMWBW, SCM, z80ctrl, busRaider etc
Emulation: Alan's simulator, SIMH, Grant's Multcomp
New board designs
EDA tools- KiCad, EasyEDA, Eagle, Quartus, Vivado
PCB design
and more :)

i2c LCD demo program for Z80 (SC704)

Yoshitaka Kuwata