bbc_vidproc.cdl File Reference

BBC microcomputer video ULA CDL implementation. More...

Detailed Description

BBC microcomputer video ULA CDL implementation.

Copyright (C) 2016-2017, Gavin J Stark. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

CDL implementation of the BBC microcomputer model B video ULA.

The Video ULA is responsible for converting bitmap display byte data to pixel colors using a programmable palette (with two entries per color to allow for flashing colors); it also handles the cursor (flashing or solid), and combining the SAA5050 teletext output as required.

Data Structures
struct	bbc_vidproc::t_palette_entry
struct	bbc_vidproc::t_control

Namespaces
	bbc_vidproc

Typedefs
typedef t_palette_entry[16]	bbc_vidproc::t_palette
typedef bit[3]	bbc_vidproc::t_pixel_color

Enumerations
enum	bbc_vidproc::t_num_columns {   bbc_vidproc::columns_10 =0,   bbc_vidproc::columns_20 =1,   bbc_vidproc::columns_40 =2,   bbc_vidproc::columns_80 =3 }