accumulator Entity Reference

Inheritance diagram for accumulator:

Entities
accumulator.rtl	architecture

Ports
databus_SB	inout	std_ulogic_vector ( 7 downto 0 )
		The SB bus
databus_DB	out	std_ulogic_vector ( 7 downto 0 )
		The DB bus
load_SB_AC	in	std_ulogic
		SB/AC - Load from SB bus into the accumulator
output_enable_AC_SB	in	std_ulogic
		AC/SB - Enable Accumulator output to SB bus
output_enable_AC_DB	in	std_ulogic
		AC/DB - Enable Accumulator output to DB bus

Detailed Description

The Accumulator for the 6502

Todo:

This does not implement the BCD correction circuitry

Member Data Documentation

databus_DB

databus_DB out std_ulogic_vector ( 7 downto 0 )

Port

The DB bus

databus_SB

databus_SB inout std_ulogic_vector ( 7 downto 0 )

Port

The SB bus

load_SB_AC

load_SB_AC in std_ulogic

Port

SB/AC - Load from SB bus into the accumulator

output_enable_AC_DB

output_enable_AC_DB in std_ulogic

Port

AC/DB - Enable Accumulator output to DB bus

output_enable_AC_SB

output_enable_AC_SB in std_ulogic

Port

AC/SB - Enable Accumulator output to SB bus

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The documentation for this design unit was generated from the following file:

• cores/ricoh_2A03/datapath/accumulator.vhdl