David S. Madole

AVI1861. An update of the AVI1861 drop-in replacement for the CDP1861

1802-Mini. This is a modular, expandable, 1802-based computer envisioned for uses from an SBC to eventually a multi-user timesharing system. Inspired by tebl/1802-Cosmac-ELF.

Nametag. This is firmware for Lee Hart's name tag with 14-segment displays.

Elfos-turbo. Turbo is a filesystem accelerator for Elf/OS versions 0.3.1 and greater. It works by replacing the o_read and o_write API calls with more efficient versions that process data block-by-block instead of byte-by-byte.

Elfos-nitro. Nitro is a loadable soft UART for Elf/OS that offers higher speeds compared to the BIOS uart, and also basic line editing of input. It is also a proof of concept for a framework to redirect the BIOS API.

Elfos-yr. yr is an X/YMODEM receiver for ElfOS that supports XMODEM including CRC and 1K options, and YMODEM including receipt of file name and lengths, and batch transfers of multiple files. Works with the nitro UART to support high data rates,

1802-Mini-Super-Elf-Bus. This is a bus adapter card for the Quest Super Elf that adapts it to expansion cards for the 1802/Mini system.

1802-Mini-Pixie-Video.

Elfos-init. This is a program which can be installed as INIT under Elf/OS to allow multiple other programs to be run automatically at boot time, such as to install device drivers or other add-ons.

MiniDOS-baseutils. Minimal utilities set for MiniDOS

1802-Mini-Compact-Flash.

Elfos-parti. Simple virtual disk partitioning driver for Elf/OS

MiniDOS-doskey. Loadable line editor to replace BIOS f_input and f_inputl

MiniDOS-xr. XMODEM receiver program for Mini/DOS

1802-Mini-Backplane. A backplane for the 1802 Mini as an alternative to the stacking physical format. Incorporates power, reset, and input buttons,.

Elfos-ripples. Demo for 1861 video under Elf/OS

Mini-1864. A drop-in replacement for the RCA CDP1864 PAL video chip created using more modern PLDs.

1802-Mini-1854-Serial.

1802-Mini-Front-Panel.

Elfos-diego. Experimental SD Card storage driver for Elf/OS to support minimal hardware interface.

Elfos-portmon. Assembly

1802-Mini-Processor.

MiniROM-image. Script to package MBIOS, utility, and ROM disk into a ROM image

Elfos-studio. Assembly

Elfos-hextobin. A utility to copy from Intel hex format input files to binary format output files on Elf/OS.

MiniDOS-crc. This is a crc command for Mini/DOS

Elfos-hydro. Hydro is a loadable driver module for Elf/OS that supports the 1802/Mini compact flash interface card operating in DMA mode, without requiring any changes to BIOS.