summaryrefslogtreecommitdiffstatshomepage
diff options
context:
space:
mode:
author AJR <ajrhacker@users.noreply.github.com>2017-10-17 11:31:17 -0400
committer AJR <ajrhacker@users.noreply.github.com>2017-10-17 11:31:17 -0400
commit77aca96af71a05dd16551aa1157d8864c9d140b0 (patch)
treef4b7198280098c5587565c68305dca51c56ffa2a
parent52d9affff1adfb68ecdff3daa6ae6730978f287c (diff)
d6809: Add some devices (nw)
-rw-r--r--src/mame/drivers/d6809.cpp15
1 files changed, 10 insertions, 5 deletions
diff --git a/src/mame/drivers/d6809.cpp b/src/mame/drivers/d6809.cpp
index 0de3a24adfd..7a49d95d000 100644
--- a/src/mame/drivers/d6809.cpp
+++ b/src/mame/drivers/d6809.cpp
@@ -11,15 +11,15 @@ Chips used:
- 6809E CPU
- 6845 CRTC
- 6840 CTC
-- 6551 UART Console
-- 6551 UART Aux
-- 6850 UART Unknown purpose
+- 6551 ACIA Console
+- 6551 ACIA Aux
+- 6850 ACIA Unknown purpose
- uPD765 FDC
- 2764 8K ROM for CPU
- 2732 4K ROM for Chargen (not dumped)
- 6x 6264 RAM
- 3x 5516 RAM
-- XTAL: 16MHz
+- XTALs: 14.745MHz, 16MHz
So much for the official documentation.
@@ -84,6 +84,7 @@ devices.
#include "emu.h"
#include "cpu/m6809/m6809.h"
+#include "machine/mos6551.h"
#include "machine/terminal.h"
#define TERMINAL_TAG "terminal"
@@ -123,6 +124,8 @@ WRITE8_MEMBER( d6809_state::term_w )
static ADDRESS_MAP_START( d6809_mem, AS_PROGRAM, 8, d6809_state )
ADDRESS_MAP_UNMAP_HIGH
// 00-FF is for various devices.
+ AM_RANGE(0x0000, 0x0003) AM_DEVREADWRITE("acia1", mos6551_device, read, write)
+ AM_RANGE(0x0004, 0x0007) AM_DEVREADWRITE("acia2", mos6551_device, read, write)
AM_RANGE(0x00ff, 0x00ff) AM_READWRITE(term_r,term_w)
AM_RANGE(0x1000, 0xdfff) AM_RAM
AM_RANGE(0xe000, 0xffff) AM_ROM
@@ -146,9 +149,11 @@ void d6809_state::machine_reset()
static MACHINE_CONFIG_START( d6809 )
/* basic machine hardware */
- MCFG_CPU_ADD("maincpu",M6809E, XTAL_4MHz)
+ MCFG_CPU_ADD("maincpu", M6809, XTAL_14_7456MHz / 8) // MC68B09EP
MCFG_CPU_PROGRAM_MAP(d6809_mem)
+ MCFG_DEVICE_ADD("acia1", MOS6551, XTAL_14_7456MHz / 8) // uses Q clock
+ MCFG_DEVICE_ADD("acia2", MOS6551, XTAL_14_7456MHz / 8) // uses Q clock
/* video hardware */
MCFG_DEVICE_ADD(TERMINAL_TAG, GENERIC_TERMINAL, 0)