Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 00:39:36 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

Fixes to make basic boot on HP9000/300 (#3466)

Browse Source 
* hp9k_3xx: add dummy gpib handler

BASIC expects that there is an internal gpib card present.
It crashes without, so let's add some dummy handlers for now.

Signed-off-by: Sven Schnelle <svens@stackframe.org>

* hp9k_3xx: add fallback buserror handler

HP BASIC and the bootrom rely on buserror to figure out
hardware configuration. Adding a global buserror handler
makes BASIC boot on models >= 340. 310 doesn't show a picture
with that handler, so let's leave them out for now.

Signed-off-by: Sven Schnelle <svens@stackframe.org>

* hp9k_3xx: remove unneeded buserror handlers

Now that we have the fallback buserror handler in place,
we don't need the other buserror handlers anymore.

Signed-off-by: Sven Schnelle <svens@stackframe.org>

* hp9k_3xx: log accesses to gpib registers

Signed-off-by: Sven Schnelle <svens@stackframe.org>
This commit is contained in:
Sven Schnelle 2018-04-17 21:42:59 +02:00 committed by R. Belmont
parent 0202223b8d
commit 49d25dac06
1 changed files with 27 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
src/mame/drivers/hp9k_3xx.cpp
View File

@ -55,6 +55,7 @@
****************************************************************************/
#include "emu.h"
#include "logmacro.h"
#include "cpu/m68000/m68000.h"
#include "cpu/mcs48/mcs48.h"
#include "machine/6840ptm.h"
@ -113,6 +114,9 @@ public:
DECLARE_READ8_MEMBER(iocpu_port1_r);
DECLARE_READ8_MEMBER(iocpu_test0_r);
DECLARE_READ8_MEMBER(gpib_r);
DECLARE_WRITE8_MEMBER(gpib_w);
DECLARE_WRITE32_MEMBER(led_w)
{
if (mem_mask != 0x000000ff)
@ -187,18 +191,17 @@ uint32_t hp9k3xx_state::hp_medres_update(screen_device &screen, bitmap_rgb32 &bi
// shared mappings for all 9000/3xx systems
void hp9k3xx_state::hp9k3xx_common(address_map &map)
{
map(0x00000000, 0xffffffff).rw(this, FUNC(hp9k3xx_state::buserror_r), FUNC(hp9k3xx_state::buserror_w));
map(0x00000000, 0x0001ffff).rom().region("maincpu", 0).w(this, FUNC(hp9k3xx_state::led_w)); // writes to 1fffc are the LED
map(0x00428000, 0x00428003).rw(m_iocpu, FUNC(upi41_cpu_device::upi41_master_r), FUNC(upi41_cpu_device::upi41_master_w)).umask32(0x00ff00ff);
map(0x00510000, 0x00510003).rw(this, FUNC(hp9k3xx_state::buserror_r), FUNC(hp9k3xx_state::buserror_w)); // no "Alpha display"
map(0x00538000, 0x00538003).rw(this, FUNC(hp9k3xx_state::buserror_r), FUNC(hp9k3xx_state::buserror_w)); // no "Graphics"
map(0x005c0000, 0x005c0003).rw(this, FUNC(hp9k3xx_state::buserror_r), FUNC(hp9k3xx_state::buserror_w)); // no add-on FP coprocessor
map(0x00600000, 0x007fffff).rw(this, FUNC(hp9k3xx_state::buserror_r), FUNC(hp9k3xx_state::buserror_w)); // prevent reading invalid DIO slots
map(0x01000000, 0x1fffffff).rw(this, FUNC(hp9k3xx_state::buserror_r), FUNC(hp9k3xx_state::buserror_w)); // prevent reading invalid DIO-II slots
map(0x00478000, 0x0047ffff).rw(this, FUNC(hp9k3xx_state::gpib_r), FUNC(hp9k3xx_state::gpib_w)).umask16(0x00ff);
map(0x005f8000, 0x005f800f).rw(PTM6840_TAG, FUNC(ptm6840_device::read), FUNC(ptm6840_device::write)).umask32(0x00ff00ff);
map(0x005f4000, 0x005f400f).ram(); // somehow coprocessor related - bootrom crashes if not present
map(0x00474000, 0x00474fff).ram(); // unknown
}
// 9000/310 - has onboard video that the graphics card used in other 3xxes conflicts with
@ -222,7 +225,12 @@ void hp9k3xx_state::hp9k320_map(address_map &map)
{
hp9k3xx_common(map);
map(0xffe00000, 0xffefffff).rw(this, FUNC(hp9k3xx_state::buserror_r), FUNC(hp9k3xx_state::buserror_w));
// unknown, but bootrom crashes without
map(0x00510000, 0x00510fff).ram();
map(0x00516000, 0x00516fff).ram();
map(0x00440000, 0x0044ffff).ram();
// main memory
map(0xfff00000, 0xffffffff).ram();
}
@ -296,6 +304,17 @@ void hp9k3xx_state::machine_reset()
{
}
WRITE8_MEMBER(hp9k3xx_state::gpib_w)
{
LOG("%s: 0x%02x = 0x%02x\n", __FUNCTION__, offset ,data);
}
READ8_MEMBER(hp9k3xx_state::gpib_r)
{
LOG("%s: 0x%02x\n", __FUNCTION__, offset);
return 0xff;
}
READ16_MEMBER(hp9k3xx_state::buserror16_r)
{
m_maincpu->set_input_line(M68K_LINE_BUSERROR, ASSERT_LINE);