This package is an extension on the FPGA multicomputer, as introduced by Grant Searle, which can be found Here. It focuses on the Z80 CP/M computer described therein.
- New ROM monitor with multi-boot capability, Format, Getsys and Putsys tools and debug capabilities. No BASIC in ROM.
- SD-HC capable card controller. Init at 250 kHz, running at 25 MHz.
- Improved keyboard definition featuring external keymap and added key functionality.
- Multi volume disk system, which currently supports upto 253 8MB disk volumes (which uses 2GB+ on the SD-card). All these volumes can be loaded with a separate OS bootimage.
- OSes configured with 3 drives: A:, B: and C:. A: for the system drive (holding the volume booted from) while B: and C: can be assigned and re-assigned one of the remaining volumes. Also a RAM disk is available for CP/M 2 and CP/M 3 systems as drive M:.
- Y2k compatible system clock (date and time) for all OSes.
- Included are CP/M 2.2, Dos+ 2.5, CP/M 3.0, MPMII 2.1, ZSDOS 1.1/ZCPR2, ZPM3/ZCCP and NASCOM ROM Basic
As github does not permit big files, you can get the system image from: Here.
Burn the image to a fresh SD card and use it on the secondary SD slot. (dd in Linux, Win32DiskImager in Windows)
From the ROM monitor, issue the "Snnn" command (where nnn is the volume number to boot).
- 001 DOS+ 2.5
- 002 CP/M 2.2
- 003 CP/M 3.0
- 004 MPMII
- 005 NASCOM ROM BASIC
- 006 ZSDOS 1.1/ZCPR2
- 007 ZPM3/ZCPP
There are 48 disk volumes. (each volume can have different "USER" directories)
The boot disk is always mapped as A: and RamDisk as M: To mount any other disk (as B: or C:) issue the comand "MOUNT DRIVE: nnn" (where nnn is the volume number)