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Merge pull request #918 from Bavarese/patch-2

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Update rainbow.cpp [Bavarese]
This commit is contained in:
cracyc 2016-06-03 14:37:58 -05:00
commit fe95f89b73
1 changed files with 15 additions and 13 deletions
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28
src/mame/drivers/rainbow.cpp
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@ -25,12 +25,12 @@ in secondary boot loader with a RESTORE (seek track 0) when track 2 sector 1 sho
Writing files to floppy is next to impossible on both CPM 1.x and DOS 3 (these two OS boot
with keyboard workarounds enabled). File deletion works, so few bytes pass.
(3) heavy system interaction stalls the driver. Start one of the torture tests on the diag.disk
and see what happens (system interaction, Z80, about any test except the video / CRT tests).
(3) heavy system interaction stalls the driver. Start the RX50 diag.disk and
see what happens (key 3 for individual tests, then select system interaction).
(4) arbitration chip (E11; in 100-A schematics or E13 in -B) should be dumped.
It is a 6308 OTP ROM (2048 bit, 256 x 8) used as a lookup table (LUT) with the address pins (A)
used as inputs and the data pins (D) as output.
It is a 6308 OTP ROM (2048 bit, 256 x 8) used as a lookup table (LUT) with the address pins (A)
used as inputs and the data pins (D) as output.
Plays a role in DMA access to lower memory (limited to 64 K; Extended communication option only).
Arbiter is also involved in refresh and shared memory contention (affects Z80/8088 CPU cycles).
@ -387,10 +387,10 @@ private:
IRQ_8088_MAILBOX = 0, // 27/A7 9C/29C - [built-in] Interrupt from Z80A
IRQ_8088_KBD, // 26/A6 98/298 - [built-in] KEYBOARD Interrupt - 8251A
IRQ_BDL_INTR_L, // 25/A5 94/294 - [ext. BUNDLE OPTION] Hard disk or Extended communication IRQ (no DMA)
// IRQ_COMM_PTR_INTR_L, // 24/A4 90/290 - [built-in 7201] Communication/Printer interrupt
// IRQ_DMAC_INTR_L, // 23/A3 8C/28C - [ext. COMM.BOARD only] - external DMA Controller (8237) interrupt
// IRQ_GRF_INTR_L, // 22/A2 88/288 - [ext. COLOR GRAPHICS]
// IRQ_BDL_INTR_1L, // 21/A1 84/284 - [ext. COMM.BOARD only]
IRQ_COMM_PTR_INTR_L, // 24/A4 90/290 - [built-in 7201] Communication/Printer interrupt
IRQ_DMAC_INTR_L, // 23/A3 8C/28C - [ext. COMM.BOARD only] - external DMA Controller (8237) interrupt
IRQ_GRF_INTR_L, // 22/A2 88/288 - [ext. COLOR GRAPHICS]
IRQ_BDL_INTR_1L, // 21/A1 84/284 - [ext. COMM.BOARD only]
IRQ_8088_VBL, // 20/A0 80/280 - [built-in DC012] - VERT INTR L (= schematics)
IRQ_8088_NMI // 02/02 08/08 - [external MEMORY EXTENSION] - PARITY ERROR L
}; // HIGHEST PRIORITY
@ -492,7 +492,6 @@ FLOPPY_IMD_FORMAT,
FLOPPY_PC_FORMAT
FLOPPY_FORMATS_END
// initially only : SLOT_INTERFACE("525qd", FLOPPY_525_SSQD)
static SLOT_INTERFACE_START(rainbow_floppies)
SLOT_INTERFACE("525qd0", FLOPPY_525_SSQD)
SLOT_INTERFACE("525qd1", FLOPPY_525_SSQD)
@ -953,7 +952,7 @@ UINT32 rainbow_state::screen_update_rainbow(screen_device &screen, bitmap_ind16
// Interrupt handling and arbitration. See 3.1.3.8 OF PC-100 spec.
void rainbow_state::update_8088_irqs()
{
static const int vectors[] = { 0x27, 0x26, 0x25, 0x20 };
static const int vectors[] = { 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20, 0x02 };
if (m_irq_mask != 0)
{
@ -961,7 +960,10 @@ void rainbow_state::update_8088_irqs()
{
if (m_irq_mask & (1 << i))
{
m_i8088->set_input_line_and_vector(INPUT_LINE_INT0, ASSERT_LINE, vectors[i] | m_irq_high);
if (vectors[i] == 0x02) // NMI
m_i8088->set_input_line_and_vector(INPUT_LINE_INT0, ASSERT_LINE, 0x02);
else
m_i8088->set_input_line_and_vector(INPUT_LINE_INT0, ASSERT_LINE, vectors[i] | m_irq_high);
break;
}
}
@ -1986,7 +1988,7 @@ WRITE8_MEMBER(rainbow_state::z80_diskcontrol_w)
}
else
{
m_floppy->ss_w((data & 20) ? 1 : 0); // RX50 board in Rainbow has 'side select'
m_floppy->ss_w((data & 0x20) ? 1 : 0); // RX50 board in Rainbow has 'side select'
m_floppy->set_rpm(300.);
}
}