galaksija-display.c: a 32x16 text video chip that renders the Galaksija
video RAM. It is a passive bus snoop -- watches WR + address + data, and on
a write into the 0x2800 video region stores the character and renders that
cell into a 256x128 framebuffer using the public-domain CHRGEN font (code*8,
bit 0 = lit). It never drives the bus. The host blits the framebuffer to the
chip canvas (vx_framebuffer_init / vx_buffer_write).
Two tests:
- chipbus-galaksija-display: snoop+render smoke test (a write of 'R' to
0x2802 lights its cell; unwritten cells stay blank).
- chipbus-galaksija-computer: the COMPLETE machine over the chip-to-chip bus
(Z80 + galaksija-rom + ram-64k + inverter decode + galaksija-display) boots
the public-domain ROM and renders the monitor's "READY" prompt on screen.
40 chipbus tests across 10 files pass.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
David Montero Crespo