Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-10-05 08:41:31 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

hp2622a: Add RAM, more stubs (nw)

Browse Source
This commit is contained in:
AJR 2017-12-18 15:17:09 -05:00
parent 6fc860edc0
commit 70d096eb53
1 changed files with 31 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
src/mame/drivers/hp2620.cpp
View File

@ -1,5 +1,5 @@
// license:BSD-3-Clause
// copyright-holders:
// copyright-holders:AJR
/***********************************************************************************************************************************
Skeleton driver for HP-2620 series display terminals.
@ -25,6 +25,11 @@ public:
DECLARE_READ8_MEMBER(nvram_r);
DECLARE_WRITE8_MEMBER(nvram_w);
DECLARE_READ8_MEMBER(keystat_r);
DECLARE_WRITE8_MEMBER(keydisp_w);
DECLARE_READ8_MEMBER(sysstat_r);
DECLARE_WRITE8_MEMBER(modem_w);
u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
private:
@ -49,16 +54,38 @@ WRITE8_MEMBER(hp2620_state::nvram_w)
m_nvram[offset] = data & 0x0f;
}
READ8_MEMBER(hp2620_state::keystat_r)
{
return 0xff;
}
WRITE8_MEMBER(hp2620_state::keydisp_w)
{
}
READ8_MEMBER(hp2620_state::sysstat_r)
{
return 0xff;
}
WRITE8_MEMBER(hp2620_state::modem_w)
{
}
static ADDRESS_MAP_START( mem_map, AS_PROGRAM, 8, hp2620_state )
AM_RANGE(0x0000, 0xbfff) AM_ROM AM_REGION("maincpu", 0)
AM_RANGE(0xc000, 0xffff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START( io_map, AS_PROGRAM, 8, hp2620_state )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x7f) AM_READWRITE(nvram_r, nvram_w) AM_SHARE("nvram")
AM_RANGE(0x80, 0x80) AM_READNOP
AM_RANGE(0xa8, 0xab) AM_DEVWRITE("acia", mos6551_device, write)
AM_RANGE(0xac, 0xaf) AM_DEVREAD("acia", mos6551_device, read)
AM_RANGE(0x80, 0x80) AM_READ(keystat_r)
AM_RANGE(0x90, 0x90) AM_READ(sysstat_r)
AM_RANGE(0xa0, 0xa3) AM_DEVWRITE("acia", mos6551_device, write)
AM_RANGE(0xa4, 0xa7) AM_DEVREAD("acia", mos6551_device, read)
AM_RANGE(0xa8, 0xa8) AM_WRITE(modem_w)
AM_RANGE(0xb8, 0xb8) AM_WRITE(keydisp_w)
ADDRESS_MAP_END
static INPUT_PORTS_START( hp2622 )