1802 HHC software the original software in the HHC was based on the Forth Inc dictionary structure (names stored as 1 length byte and 1st 3 bytes of name) - this compact method allowed for more code to be squeezed into the available RAM the initial system software included a Forth code word set, a Forth threaded word set, Forth compiler, a 'Block' screen editor, cassette 'Block' I/O, serial printer, and low-level monitor for installation support, using a total of 10Kb of memory this was initially hand-coded and then loaded using
a multi-stage bootstrapping process:- a few years ago i upgraded the code from the original Forth Inc style to a combination of Forth-79 and FIG Forth and upgraded the bootstrapping process to load software from a PC using either the serial connection or the bootloader board adapted for a parallel port connection i wrote cross-assembly / cross compilation
software for the 1802 using a DOS-window version of Forth 83, but i've now
updated that
cross-development code to operate with Win32Forth, the full Windows and ANSI
version of Forth |