// license:BSD-3-Clause
// copyright-holders:Sergey Svishchev
/***************************************************************************
Hewlett-Packard 95LX palmtop, code name Jaguar.
NEC V20 CPU @ 5.37 MHz
HP F1000-80054 "Hopper" ASIC
Display controller
Keyboard controler
UART
Interrupt controller (8259 core)
Interval timer (8254 core)
Real time clock
PCMCIA 1.0 controller
ADC (4 channels; used to measure battery voltages)
DAC (1 channel; can be used as tone generator)
512KB or 1MB of RAM
1MB of BIOS ROM (banked)
P/N 18-5301 ABD \\ HN62318BFC26
LCD, 240x128 pixels (40x16 chars in MDA-compatible text mode)
To do:
- blue on green LCD palette
- native keyboard
- 1MB model
- identify RTC core
- everything else
Technical info:
- http://web.archive.org/web/20071012040320/http://www.daniel-hertrich.de/download/95lx_devguide.zip
- http://cd.textfiles.com/blackphilesii/PHILES/HP95/HP95DEV.ZIP
Useful links:
- https://hermocom.com/hplx/view-all-hp-palmtop-articles/41-95lx
- ftp://netflora.demon.co.uk/main/TEXT/hp95lxfaq.txt
- https://www.finseth.com/hpdata/hp95lx.php
has keyboard layout
- http://cfile3.uf.tistory.com/attach/152BF03E50054B2925840F
Explorer's Guide to the HP 95LX
- http://www.palmtoppaper.com/ptphtml/12/pt120055.htm
Evolution of the HP Palmtops
- http://web.archive.org/web/20150423014908/http://www.sp.uconn.edu/~mchem1/HPLX.shtml
HPLX-L mailing list archive
Software:
- http://www.retroisle.com/others/hp95lx/software.php
- http://www.mizj.com/
- http://www.hp200lx.net/
- http://www.nic.funet.fi/index/misc/hp95lx/Index
- http://cd.textfiles.com/blackphilesii/PHILES/HP95/
***************************************************************************/
#include "emu.h"
#include "machine/nvram.h"
#include "machine/pic8259.h"
#include "machine/pit8253.h"
#include "bus/isa/isa.h"
#include "bus/isa/isa_cards.h"
#include "bus/pc_kbd/keyboards.h"
#include "bus/pc_kbd/pc_kbdc.h"
#include "cpu/nec/nec.h"
#include "machine/bankdev.h"
#include "machine/ram.h"
#include "sound/dac.h"
#include "sound/volt_reg.h"
#include "screen.h"
#include "emupal.h"
#include "softlist.h"
#include "speaker.h"
//#define LOG_GENERAL (1U << 0) //defined in logmacro.h already
#define LOG_KEYBOARD (1U << 1)
#define LOG_DEBUG (1U << 2)
//#define VERBOSE (LOG_GENERAL)
//#define LOG_OUTPUT_FUNC printf
#include "logmacro.h"
#define LOGKBD(...) LOGMASKED(LOG_KEYBOARD, __VA_ARGS__)
#define LOGDBG(...) LOGMASKED(LOG_DEBUG, __VA_ARGS__)
#define KBDC_TAG "pc_kbdc"
class hp95lx_state : public driver_device
{
public:
hp95lx_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_bankdev_c000(*this, "bankdev_c000")
, m_bankdev_d000(*this, "bankdev_d000")
, m_bankdev_e000(*this, "bankdev_e000")
, m_bankdev_e400(*this, "bankdev_e400")
, m_bankdev_e800(*this, "bankdev_e800")
, m_bankdev_ec00(*this, "bankdev_ec00")
, m_ram(*this, RAM_TAG)
, m_nvram2(*this, "nvram2")
, m_nvram3(*this, "nvram3")
, m_isabus(*this, "isa")
, m_pic8259(*this, "pic8259")
, m_pit8254(*this, "pit8254")
, m_dac(*this, "dac")
, m_screen(*this, "screen")
, m_p_videoram(*this, "video")
, m_p_chargen(*this, "gfx1")
{ }
void d300_w(offs_t offset, uint8_t data);
uint8_t d300_r(offs_t offset);
void e300_w(offs_t offset, uint8_t data);
uint8_t e300_r(offs_t offset);
void f300_w(offs_t offset, uint8_t data);
uint8_t f300_r(offs_t offset);
void hp95lx(machine_config &config);
protected:
virtual void machine_start() override;
virtual void machine_reset() override;
required_device<cpu_device> m_maincpu;
required_device<address_map_bank_device> m_bankdev_c000;
required_device<address_map_bank_device> m_bankdev_d000;
required_device<address_map_bank_device> m_bankdev_e000;
required_device<address_map_bank_device> m_bankdev_e400;
required_device<address_map_bank_device> m_bankdev_e800;
required_device<address_map_bank_device> m_bankdev_ec00;
required_device<ram_device> m_ram;
required_device<nvram_device> m_nvram2;
optional_device<nvram_device> m_nvram3;
required_device<isa8_device> m_isabus;
required_device<pic8259_device> m_pic8259;
required_device<pit8254_device> m_pit8254;
required_device<dac_8bit_r2r_device> m_dac;
required_device<screen_device> m_screen;
private:
void hp95lx_palette(palette_device &palette) const;
DECLARE_WRITE_LINE_MEMBER(keyboard_clock_w);
DECLARE_WRITE_LINE_MEMBER(keyboard_data_w);
uint8_t keyboard_r(offs_t offset);
void keyboard_w(offs_t offset, uint8_t data);
uint8_t video_r(offs_t offset);
void video_w(offs_t offset, uint8_t data);
void video_address_w(uint8_t data);
uint8_t video_register_r();
void video_register_w(uint8_t data);
void debug_w(offs_t offset, uint8_t data);
void hp95lx_io(address_map &map);
void hp95lx_map(address_map &map);
void hp95lx_romdos(address_map &map);
required_shared_ptr<u8> m_p_videoram;
required_region_ptr<u8> m_p_chargen;
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
u8 m_mapper[32], m_rtcram[2];
// crtc
u8 m_crtc[64], m_cursor_start_ras;
u16 m_disp_start_addr, m_cursor_addr, m_window_start_addr;
int m_register_address_latch;
bool m_graphics_mode;
// from pt68k4.cpp
bool m_kclk;
uint8_t m_kdata;
uint8_t m_scancode;
uint8_t m_kbdflag;
int m_kbit;
};
void hp95lx_state::hp95lx_palette(palette_device &palette) const
{
palette.set_pen_color(0, 0xa0, 0xa8, 0xa0);
palette.set_pen_color(1, 0x30, 0x38, 0x10);
}
uint32_t hp95lx_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int x, y, offset;
uint16_t gfx, *p;
uint8_t chr, attr;
if (m_graphics_mode)
{
for (y = 0; y < 128; y++)
{
p = &bitmap.pix16(y);
offset = y * (240 / 8);
for (x = offset; x < offset + (240 / 8); x++)
{
gfx = m_p_videoram[x];
for (int i = 7; i >= 0; i--)
{
*p++ = BIT(gfx, i);
}
}
}
}
else
{
bool blink((m_screen->frame_number() % 10) > 4);
// screen memory is normal MDA 80x25, but only a scrollable 40x16 window is displayed
for (y = 0; y < 128; y++)
{
p = &bitmap.pix16(y);
offset = (y / 8) * 160 + m_window_start_addr;
for (x = offset; x < offset + 80; x += 2)
{
chr = m_p_videoram[x];
attr = m_p_videoram[x + 1];
gfx = m_p_chargen[(chr)*8 + (y % 8)];
if ((x >> 1) == m_cursor_addr && blink && (y % 8) >= m_cursor_start_ras)
{
gfx = 0xff;
}
switch (attr)
{
case 0x00:
gfx = 0;
break;
case 0x01:
if (y % 8 == 7) gfx = 0xff;
break;
case 0x70:
gfx ^= 0xff;
break;
}
for (int i = 5; i >= 0; i--)
{
*p++ = BIT(gfx, i);
}
}
}
}
return 0;
}
void hp95lx_state::machine_start()
{
save_item(NAME(m_mapper));
save_item(NAME(m_rtcram));
save_item(NAME(m_crtc));
save_item(NAME(m_graphics_mode));
//
save_item(NAME(m_kclk));
save_item(NAME(m_kdata));
save_item(NAME(m_scancode));
save_item(NAME(m_kbdflag));
save_item(NAME(m_kbit));
memcpy(m_p_chargen, memregion("romdos")->base() + 0xffa6e, 0x0400);
memcpy(m_p_chargen + 0x0400, memregion("romdos")->base() + 0xfb200, 0x0400);
}
void hp95lx_state::machine_reset()
{
std::fill(std::begin(m_mapper), std::end(m_mapper), 0);
std::fill(std::begin(m_rtcram), std::end(m_rtcram), 0);
std::fill(std::begin(m_crtc), std::end(m_crtc), 0);
m_graphics_mode = false;
m_cursor_start_ras = 7;
m_disp_start_addr = 0;
m_cursor_addr = 0;
m_kclk = true;
m_kbit = 0;
m_scancode = 0;
m_kbdflag = 0;
m_dac->write(0x7f);
}
void hp95lx_state::d300_w(offs_t offset, uint8_t data)
{
LOG("%s: IO %04x <- %02x\n", machine().describe_context(), 0xd300 + offset, data);
switch (offset)
{
case 0:
m_window_start_addr = ((data & 0xff) << 0) | (m_window_start_addr & 0xff00);
break;
case 1:
m_window_start_addr = ((data & 0x3f) << 8) | (m_window_start_addr & 0x00ff);
break;
case 2:
m_graphics_mode = !BIT(data, 4);
break;
case 6:
case 7:
m_rtcram[offset - 6] = data;
break;
}
}
uint8_t hp95lx_state::d300_r(offs_t offset)
{
uint8_t data = 0;
switch (offset)
{
case 0:
data = m_window_start_addr;
break;
case 1:
data = m_window_start_addr >> 8;
break;
case 5:
data = 0x2;
break;
case 6:
case 7:
data = m_rtcram[offset - 6];
break;
}
LOG("%s: IO %04x == %02x\n", machine().describe_context(), 0xd300 + offset, data);
return data;
}
void hp95lx_state::e300_w(offs_t offset, uint8_t data)
{
LOG("%s: IO %04x <- %02x\n", machine().describe_context(), 0xe300 + offset, data);
switch (offset)
{
case 1: // b1 = 'IR interrupt enable' (per IR.DOC)
break;
case 2: // interrupt control (per snd.c), 0: disable all, 127: enable all
break;
case 5: // DAC out (per snd.c)
m_dac->write(data);
break;
case 9: // b1 = 'a2d power' (per snd.c)
break;
case 10: // IRFMAT register (per IR.DOC)
break;
case 11: // IR transmit/receive register (per IR.DOC)
break;
case 13: // reset?
break;
case 14: // keyboard output?
case 15:
break;
}
}
uint8_t hp95lx_state::e300_r(offs_t offset)
{
uint8_t data = 0;
switch (offset)
{
case 2: // b6 = low battery? (FD97Eh)
break;
case 4: // Card Detect Register (per chap5.txt)
data = 0x50; // memory card inserted
break;
case 7:
data = 0x20;
break;
case 9: // FF889h. b0 = ADC ready? (per snd2.c)
break;
case 10: // IRFMAT register (per IR.DOC)
break;
case 11: // IR transmit/receive register (per IR.DOC)
break;
case 14: // keyboard status?
case 15:
return data;
break;
}
LOG("%s: IO %04x == %02x\n", machine().describe_context(), 0xe300 + offset, data);
return data;
}
void hp95lx_state::f300_w(offs_t offset, uint8_t data)
{
address_map_bank_device *mapper;
const char *mapname;
LOG("%s: IO %04x <- %02x\n", machine().describe_context(), 0xf300 + offset, data);
if (offset >= sizeof(m_mapper)) return;
m_mapper[offset] = data;
switch (offset)
{
case 0x11: // E0000 16K
mapper = m_bankdev_e000;
mapname = "E0000";
break;
case 0x13: // E4000 16K
mapper = m_bankdev_e400;
mapname = "E4000";
break;
case 0x15: // E8000 16K
mapper = m_bankdev_e800;
mapname = "E8000";
break;
case 0x17: // EC000 16K
mapper = m_bankdev_ec00;
mapname = "EC000";
break;
case 0x18: // C0000 64K
mapper = m_bankdev_c000;
mapname = "C0000";
break;
case 0x19: // D0000 64K
mapper = m_bankdev_d000;
mapname = "D0000";
break;
default:
LOG("MAPPER %02x unknown\n", offset);
return;
}
switch (offset)
{
case 0x11: case 0x13: case 0x15: case 0x17:
switch (data)
{
case 0: // internal
if (m_mapper[offset - 1])
{
LOG("MAPPER %s <- %05X\n", mapname, (m_mapper[offset - 1] & 127) * 0x2000);
mapper->set_bank((m_mapper[offset - 1] >> 1) & 63);
}
break;
case 1: // unknown
case 2:
break;
case 4: // card slot
LOG("MAPPER %s <- %06X (card)\n", mapname, (m_mapper[offset - 1]) * 0x2000);
mapper->set_bank(0x1000 + (m_mapper[offset - 1] >> 1));
break;
case 7: // XXX unmap
LOG("MAPPER %s <- unmap\n", mapname);
mapper->set_bank(0x400);
break;
}
break;
case 0x18: case 0x19:
switch (data & 7)
{
case 0:
if ((data & 0x87) == 0x80)
{
LOG("MAPPER %s <- %X0000\n", mapname, (data >> 3) & 15);
mapper->set_bank((data >> 3) & 15);
}
break;
case 4: // XXX
break;
case 7: // XXX unmap
LOG("MAPPER %s <- unmap\n", mapname);
mapper->set_bank(0x40);
break;
}
}
}
uint8_t hp95lx_state::f300_r(offs_t offset)
{
uint8_t data = 0;
LOG("%s: IO %04x == %02x\n", machine().describe_context(), 0xf300 + offset, data);
return data;
}
/* keyboard HLE -- adapted from pt68k4.cpp */
uint8_t hp95lx_state::keyboard_r(offs_t offset)
{
if (offset == 0)
{
LOGKBD("kbd: read %02X == %02X\n", offset + 0x60, m_scancode);
m_pic8259->ir1_w(CLEAR_LINE);
return m_scancode;
}
else
return 0;
}
void hp95lx_state::keyboard_w(offs_t offset, uint8_t data)
{
LOGKBD("kbd: write %02X <= %02X\n", offset + 0x60, data);
m_pic8259->ir1_w(CLEAR_LINE);
}
WRITE_LINE_MEMBER(hp95lx_state::keyboard_clock_w)
{
LOGKBD("kbd: KCLK: %d kbit: %d\n", state ? 1 : 0, m_kbit);
if ((state == ASSERT_LINE) && (!m_kclk))
{
if (m_kbit >= 1 && m_kbit <= 8)
{
m_scancode >>= 1;
m_scancode |= m_kdata;
}
// stop bit?
if (m_kbit == 9)
{
m_scancode >>= 1;
m_scancode |= m_kdata;
// XXX map F2..F10 to blue function keys
if (m_scancode > 0x3B && m_scancode < 0x45) m_scancode += 0x36;
LOGKBD("kbd: scancode %02x\n", m_scancode);
m_kbit = 0;
m_pic8259->ir1_w(ASSERT_LINE);
}
else
{
m_kbit++;
}
}
m_kclk = (state == ASSERT_LINE) ? true : false;
}
WRITE_LINE_MEMBER(hp95lx_state::keyboard_data_w)
{
LOGKBD("kbd: KDATA: %d\n", state ? 1 : 0);
m_kdata = (state == ASSERT_LINE) ? 0x80 : 0x00;
}
/* video HLE */
uint8_t hp95lx_state::video_register_r()
{
uint8_t ret = 0;
switch (m_register_address_latch)
{
case 0x0e:
ret = (m_cursor_addr >> 8) & 0xff;
break;
case 0x0f:
ret = (m_cursor_addr >> 0) & 0xff;
break;
/* all other registers are write only and return 0 */
default:
break;
}
return ret;
}
void hp95lx_state::video_register_w(uint8_t data)
{
switch (m_register_address_latch)
{
case 0x0a:
m_cursor_start_ras = data & 0x7f;
break;
case 0x0c:
m_disp_start_addr = ((data & 0x3f) << 8) | (m_disp_start_addr & 0x00ff);
break;
case 0x0d:
m_disp_start_addr = ((data & 0xff) << 0) | (m_disp_start_addr & 0xff00);
break;
case 0x0e:
m_cursor_addr = ((data & 0x3f) << 8) | (m_cursor_addr & 0x00ff);
break;
case 0x0f:
m_cursor_addr = ((data & 0xff) << 0) | (m_cursor_addr & 0xff00);
m_pic8259->ir2_w(ASSERT_LINE);
break;
}
}
void hp95lx_state::video_address_w(uint8_t data)
{
m_register_address_latch = data & 0x3f;
}
uint8_t hp95lx_state::video_r(offs_t offset)
{
int data = 0xff;
switch (offset)
{
case 1: case 3: case 5: case 7:
data = video_register_r();
break;
case 10:
data = 0xf0; // video_status_r(offset):
break;
}
return data;
}
void hp95lx_state::video_w(offs_t offset, uint8_t data)
{
switch (offset)
{
case 0: case 2: case 4: case 6:
video_address_w(data);
break;
case 1: case 3: case 5: case 7:
video_register_w(data);
break;
}
}
void hp95lx_state::debug_w(offs_t offset, uint8_t data)
{
LOGDBG("%11.6f %s debug: port %02X <= %02X\n", machine().time().as_double(), machine().describe_context(), offset + 0x90, data);
}
void hp95lx_state::hp95lx_romdos(address_map &map)
{
map(0x0000000, 0x00fffff).rom().region("romdos", 0);
map(0x4000000, 0x41fffff).ram().share("nvram3");
}
void hp95lx_state::hp95lx_map(address_map &map)
{
map.unmap_value_high();
map(0x00000, 0x7ffff).ram().share("nvram2");
map(0xa0000, 0xaffff).rom().region("romdos", 0xe0000); // OS functions (DOS, COMMAND.COM)
map(0xb0000, 0xb0fff).ram().share("video");
map(0xc0000, 0xcffff).rw(m_bankdev_c000, FUNC(address_map_bank_device::read8), FUNC(address_map_bank_device::write8));
map(0xd0000, 0xdffff).rw(m_bankdev_d000, FUNC(address_map_bank_device::read8), FUNC(address_map_bank_device::write8));
map(0xe0000, 0xe3fff).rw(m_bankdev_e000, FUNC(address_map_bank_device::read8), FUNC(address_map_bank_device::write8));
map(0xe4000, 0xe7fff).rw(m_bankdev_e400, FUNC(address_map_bank_device::read8), FUNC(address_map_bank_device::write8));
map(0xe8000, 0xebfff).rw(m_bankdev_e800, FUNC(address_map_bank_device::read8), FUNC(address_map_bank_device::write8));
map(0xec000, 0xeffff).rw(m_bankdev_ec00, FUNC(address_map_bank_device::read8), FUNC(address_map_bank_device::write8));
map(0xf0000, 0xfffff).rom().region("romdos", 0xf0000); // BIOS ROM and SysMgr
}
void hp95lx_state::hp95lx_io(address_map &map)
{
map.unmap_value_low();
map(0x0020, 0x002f).rw("pic8259", FUNC(pic8259_device::read), FUNC(pic8259_device::write));
map(0x0040, 0x004f).rw("pit8254", FUNC(pit8254_device::read), FUNC(pit8254_device::write));
map(0x0060, 0x0063).rw(FUNC(hp95lx_state::keyboard_r), FUNC(hp95lx_state::keyboard_w));
// map(0x0090, 0x009f).w(FUNC(hp95lx_state::debug_w));
map(0x03b0, 0x03bf).rw(FUNC(hp95lx_state::video_r), FUNC(hp95lx_state::video_w));
// map(0x0070, 0x007f) RTC
map(0xd300, 0xd30f).rw(FUNC(hp95lx_state::d300_r), FUNC(hp95lx_state::d300_w));
map(0xe300, 0xe30f).rw(FUNC(hp95lx_state::e300_r), FUNC(hp95lx_state::e300_w));
map(0xf300, 0xf31f).rw(FUNC(hp95lx_state::f300_r), FUNC(hp95lx_state::f300_w));
}
void hp95lx_state::hp95lx(machine_config &config)
{
V20(config, m_maincpu, XTAL(5'370'000));
m_maincpu->set_addrmap(AS_PROGRAM, &hp95lx_state::hp95lx_map);
m_maincpu->set_addrmap(AS_IO, &hp95lx_state::hp95lx_io);
m_maincpu->set_irq_acknowledge_callback("pic8259", FUNC(pic8259_device::inta_cb));
ADDRESS_MAP_BANK(config, "bankdev_c000").set_map(&hp95lx_state::hp95lx_romdos).set_options(ENDIANNESS_LITTLE, 8, 32, 0x10000);
ADDRESS_MAP_BANK(config, "bankdev_d000").set_map(&hp95lx_state::hp95lx_romdos).set_options(ENDIANNESS_LITTLE, 8, 32, 0x10000);
ADDRESS_MAP_BANK(config, "bankdev_e000").set_map(&hp95lx_state::hp95lx_romdos).set_options(ENDIANNESS_LITTLE, 8, 32, 0x4000);
ADDRESS_MAP_BANK(config, "bankdev_e400").set_map(&hp95lx_state::hp95lx_romdos).set_options(ENDIANNESS_LITTLE, 8, 32, 0x4000);
ADDRESS_MAP_BANK(config, "bankdev_e800").set_map(&hp95lx_state::hp95lx_romdos).set_options(ENDIANNESS_LITTLE, 8, 32, 0x4000);
ADDRESS_MAP_BANK(config, "bankdev_ec00").set_map(&hp95lx_state::hp95lx_romdos).set_options(ENDIANNESS_LITTLE, 8, 32, 0x4000);
PIT8254(config, m_pit8254, 0);
m_pit8254->set_clk<0>(XTAL(14'318'181)/12); /* heartbeat IRQ */
m_pit8254->out_handler<0>().set(m_pic8259, FUNC(pic8259_device::ir0_w));
m_pit8254->set_clk<1>(XTAL(14'318'181)/12); /* misc IRQ */
m_pit8254->out_handler<1>().set(m_pic8259, FUNC(pic8259_device::ir2_w));
PIC8259(config, m_pic8259, 0);
m_pic8259->out_int_callback().set_inputline(m_maincpu, 0);
ISA8(config, m_isabus, 0);
m_isabus->set_memspace("maincpu", AS_PROGRAM);
m_isabus->set_iospace("maincpu", AS_IO);
ISA8_SLOT(config, "board0", 0, "isa", pc_isa8_cards, "com", true);
pc_kbdc_device &pc_kbdc(PC_KBDC(config, KBDC_TAG, 0));
pc_kbdc.out_clock_cb().set(FUNC(hp95lx_state::keyboard_clock_w));
pc_kbdc.out_data_cb().set(FUNC(hp95lx_state::keyboard_data_w));
PC_KBDC_SLOT(config, "kbd", pc_xt_keyboards, STR_KBD_KEYTRONIC_PC3270).set_pc_kbdc_slot(&pc_kbdc);
NVRAM(config, "nvram2", nvram_device::DEFAULT_ALL_0); // RAM
NVRAM(config, "nvram3", nvram_device::DEFAULT_ALL_0); // card slot
SPEAKER(config, "speaker").front_center();
DAC_8BIT_R2R(config, m_dac, 0).add_route(ALL_OUTPUTS, "speaker", 0.5); // unknown DAC
voltage_regulator_device &vref(VOLTAGE_REGULATOR(config, "vref", 0));
vref.add_route(0, m_dac, 1.0, DAC_VREF_POS_INPUT);
vref.add_route(0, m_dac, -1.0, DAC_VREF_NEG_INPUT);
// XXX When the AC adapter is plugged in, the LCD refresh rate is 73.14 Hz.
// XXX When the AC adapter is not plugged in (ie, running off of batteries) the refresh rate is 56.8 Hz.
SCREEN(config, m_screen, SCREEN_TYPE_LCD, rgb_t::white());
m_screen->set_screen_update(FUNC(hp95lx_state::screen_update));
m_screen->set_raw(XTAL(5'370'000) / 2, 300, 0, 240, 180, 0, 128);
m_screen->set_palette("palette");
PALETTE(config, "palette", FUNC(hp95lx_state::hp95lx_palette), 2);
RAM(config, RAM_TAG).set_default_size("512K");
}
ROM_START( hp95lx )
ROM_REGION(0x100000, "romdos", 0)
// Version A ... ROM BIOS Ver 2.14 ... 04/02/91
ROM_LOAD("18-5301.abd.bin", 0, 0x100000, CRC(18121c48) SHA1(c3bfb45cbbf4f57ae67fb5659da40f371d8e5c54))
ROM_REGION(0x800,"gfx1", ROMREGION_ERASE00)
ROM_END
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1991, hp95lx, 0, 0, hp95lx, 0, hp95lx_state, empty_init, "Hewlett-Packard", "HP 95LX", MACHINE_NOT_WORKING|MACHINE_NO_SOUND )