I use WWW.ASM8080.COM To assemble my code. I then copy the HEX and paste it to the system through Tera Term to a FileName.hex. I will use ED FILENAME.HEX, PRESS I, Then PASTE, Then Press CTRL-Z and last Press E to Save and exit. Type LOAD FILENAME to link the hex into FILENAME.COM. Now if all went well we can run our new .COM program. My programs are all 8080 for now as I do 8085 work and it helps me with coding for all my systems.

A curated collection of 8080/Z80/Z180 compatible programs, demos, and utilities targeting the Small Computer Central SC7xx ecosystem (e.g., SC722, SC719, SC131, SC126, SC794) running RomWBW CP/M 2.2 and compatibles.

This repository grows over time. Each subfolder includes its own README with build/run notes and any board-specific jumpers or port mappings.

• On‑target CP/M builds using ASM.COM (8080 syntax) + LOAD.COM, and MBASIC.
• Clean, minimal examples that are easy to copy, modify, and learn from.
• SC7xx-friendly I/O conventions (e.g., LED latch at port 00h by default).
• Optional cross‑assembly from a modern PC, then transfer via serial/XMODEM or CF.

/
├─ Setup Stuff/      # One-time setup, transfer scripts, terminal configs, tips
├─ CPm Stuff/        # CP/M utilities, COM builders, disk/CF helpers, DDT/inspect
├─ mbasic/           # MBASIC programs (math demos, LED effects, experiments)
├─ asm/              # 8080/Z80 assembly sources (programs & libraries)
├─ docs/             # Pin maps, I/O port notes, board jumpers, references
└─ tools/            # Cross-assemblers, host-side helpers (optional)

Each folder should carry a short README.md describing content, build steps, and expected output.

A>ED PROGRAM.ASM
*I
; paste source (8080 mnemonics for ASM.COM)
^Z
*E

A>ASM PROGRAM
A>LOAD PROGRAM
A>PROGRAM

A>MBASIC PROGRAM.BAS

A>DDTZ PROGRAM.COM
U 0100   ; unassemble from COM base

or dump bytes:

A>DUMP PROGRAM.COM

• Use sjasmplus or z80asm on a modern machine for Z80 mnemonics.
• Keep 8080 (for CP/M ASM.COM) and Z80 sources in separate folders.
• Ensure COM targets start at ORG 100h (or link accordingly).
• Transfer binaries to SC7xx via XMODEM, Kermit, or by writing a CF card.

• LED latch: examples default to port 00h (change LED_PORT EQU 0 as needed).
• Console: portable BDOS calls; non‑blocking reads typically use BDOS 6 with E=0FFh.
• Clock/RTC, CF/IDE, UART: document any board‑specific jumpers in each program’s README.

• Header block at top of each source with: CPU, syntax (8080 or Z80), toolchain, ports, build steps.
• Prefer small, self‑contained modules and visible ORG 100h for COMs.
• Use EQU for constants/ports; document timing loops and CPU clock assumptions.
• Keep examples runnable “as‑is” on a stock RomWBW CP/M system.

• LED suite (counters, patterns, binary clock, visualizers)
• Console tools (hexdump, peek/poke, RAM/ROM dumpers)
• Math demos (primes, Collatz, integer benchmarks)
• Storage helpers (INITDIR/FDISK walkthroughs, disk tools)
• Diagnostics (UART loopback, port scanners, timing tests)
• Peripheral experiments (RTC readouts, SPI/I2C bit‑bang demos)

1. Create or choose the appropriate folder (e.g., asm/led/fastled/).
2. Add:
   • PROGRAM.ASM or PROGRAM.BAS
   • README.md with build/run steps and expected output
   • Optional: PROGRAM.COM and a short log/screenshot
3. Test on at least one SC7xx board (note jumpers/ports if relevant).
4. Commit with a concise message (what it does + how to run).

Recommended: MIT for top‑level. If a sub‑project needs something different, note it in that folder’s README.

Have fun! Small, clear examples are the best building blocks. Commit early, document briefly, and keep iterating.

Maybe a Easter Egg... on boot press e and see a Mandelbrot!

Boot [H=Help]: e

Loading ...Generating a Mandelbrot set...

Small Computer SC700 [SCZ180_sc700_std] Boot Loader