Files
file	bbc_micro_with_rams.cdl
	BBC microcomputer with RAMs module.

Detailed Description

Modules

module bbc_micro_with_rams::bbc_micro_with_rams	(	clock	clk,
		clock	video_clk,
		input bit	reset_n,
		input t_csr_request	csr_request,
		output t_csr_response	csr_response,
		input t_bbc_micro_sram_request	host_sram_request,
		output t_bbc_micro_sram_response	host_sram_response,
		output t_bbc_display_sram_write	display_sram_write,
		output t_video_bus	video_bus
	)

Clock that mirrors 2MHz falling - video data from RAM is valid at this edge, so used by CRTC, SAA5050 latches, SAA5050, vidproc

6502 clock, >=2MHz but extended when accessing 1MHz peripherals

Parameters

[in] clk 4MHz clock in as a minimum