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authorGravatarGravatar Bavarese <Bavarese@users.noreply.github.com>2018-12-29 03:41:56 +0100
committerGravatarGravatar ajrhacker <ajrhacker@users.noreply.github.com>2018-12-28 21:41:56 -0500
commit03b79c8dc53cca708f578d810176cb479900443b (patch) (github)
tree8728a31d6ff24e9ae83492e16ba0016308fa3400
parentb607dadaeccc68deb8a4664e8139c6cf08cbeac1 (diff)
downloadmame-03b79c8dc53cca708f578d810176cb479900443b.tar.bz2
mame-03b79c8dc53cca708f578d810176cb479900443b.zip
[Rainbow-100]: document driver state (and remove bloat) (#4410)
* [Rainbow-100]: document driver state (and remove bloat) Venix 86-R (plus Boston Softworks Extensions) working (tested yesterday), just follow https://github.com/bsdimp/venix/blob/master/doc/MESS-RB-INSTALL.md Noted regressions in the PC subsystem (3.5 " DS DD images and 5.25 SSDD at slot 3 +4 ) after (?) April 2018. Can't fix these myself, though (effect: file content broken while directory listing seems OK; seek errors and 'write fault error reading from X' when copying). UCSD Forth and Pascal expects 4 identical QD drives, so definitions for PC-style drives in slot 3 and 4 were commented out. * [Rainbow-100]: fix regression introduced 2018-12-05 Incorrect polarity in routine: WRITE8_MEMBER(rainbow_state::diagnostic_w) [before]- m_SCREEN_BLANK = (data & 2) ? false : true; [0.2.05]+ m_screen_blank = BIT(data, 1); [now]: m_screen_blank = BIT(data, 1) ? false : true; See https://git.redump.net/mame/commit/?id=ccd87f82eccea439f54cea6b765178d1dea409c9
-rw-r--r--src/mame/drivers/rainbow.cpp60
1 files changed, 26 insertions, 34 deletions
diff --git a/src/mame/drivers/rainbow.cpp b/src/mame/drivers/rainbow.cpp
index 90b293771fc..440f474545b 100644
--- a/src/mame/drivers/rainbow.cpp
+++ b/src/mame/drivers/rainbow.cpp
@@ -10,30 +10,27 @@ Baud rate generator by AJR (2018) and Shattered (2016), keyboard & GDC fixes by
To unlock floppy drives A-D compile with WORKAROUND_RAINBOW_B (prevents a side effect of ERROR 13).
Native single sided 5.25" images with 80 tracks, 10 sectors are well tested (*.IMD / *.TD0=TeleDisk / *.IMG with 400 K).
-IMG files of DOS 180K, 360 K and VT180 disks are essentially untested (note that VT disks must be mounted "read only").
+VT180 images (184.320 Bytes) are very unreliable in CP/M - though a real machine can read them.
+5.25 MFM PC style drives and 720 K (3.5 " DS-DD MFM PC formatted disks) (on slots 3 + 4) show regressions / bugs
+ as of Dec.2018 (file content bad while dir is OK, seek errors, write fault errors when copying _to_ hard disk).
-To read a 40 track, PC-DOS formatted 5.25" image (*.TD0 preferred) mounted on drive slot 3 add:
-DEVICE=A:\idrive5.sys
-
-To access a 80 track, PC-DOS formatted 3.5" image (720K, IMG preferred) mounted on drive slot 4 add:
-DEVICE=A:\impdrv3.sys D:
-NOTE: content will be accessible via letter E: or F: (NOT D:). No luck with Impdrv5, Impdrv5F, Impdrv5T...
-
-PLEASE USE THE RIGHT SLOT - AND ALWAYS SAVE YOUR DATA BEFORE MOUNTING FOREIGN DISK FORMATS!
+ALWAYS USE THE RIGHT SLOT AND SAVE YOUR DATA BEFORE MOUNTING FOREIGN DISK FORMATS!
You * should * also reassign SETUP (away from F3, where it sits on a LK201).
DATA LOSS POSSIBLE: when in partial emulation mode, F3 performs a hard reset!
STATE AS OF DECEMBER 2018
-------------------------
+-------------------------
Driver is based entirely on the DEC-100 'B' variant (DEC-190 and DEC-100 A models are treated as clones).
While this is OK for the compatible -190, it doesn't do justice to ancient '100 A' hardware.
The public domain file RBCONVERT.ZIP documents how model 'A' differs from version B.
-
-There is some evidence that the The Design Maturity Test was designed for the Rainbow-100-A.
NVRAM files from -A and -B machines are not interchangeable. If problems arise, delete the NVRAM file.
-CPM 2.1 / DOS2.11 / DOS 3.x and UCSD systems (fort_sys, pas_sys) + diag disks boot.
+Venix 86-R (BSW) is working, just follow https://github.com/bsdimp/venix/blob/master/doc/MESS-RB-INSTALL.md
+
+CPM 2.1 / DOS2.11 / DOS 3.x / diag disks boot. UCSD systems (fort_sys, pas_sys) boot, but expect 4 QD drives
+ loaded with disks (reassign slots, reset and mount three empty 400 K images before startup at #2, #3, #4).
+
It is possible to boot DOS 3.10 from floppy A: and later use a hard disk attached to E:.
NB.: a single hard disk (5 - 67 MB, 512 byte sectors) may be attached before startup. It should remain there
@@ -360,7 +357,6 @@ W17 pulls J1 serial port pin 1 to GND when set (chassis to logical GND).
#include "rainbow.lh" // BEZEL - LAYOUT with LEDs for diag 1-7, keyboard 8-11 and floppy 20-23
-
#define RD51_MAX_HEAD 8
#define RD51_MAX_CYLINDER 1024
#define RD51_SECTORS_PER_TRACK 17
@@ -713,7 +709,7 @@ private:
uint16_t m_gdc_write_mask;
- bool m_onboard_graphics_selected; // (internal switch, on board video to mono out)
+ bool m_onboard_video_selected; // (internal switch, on board video to mono out)
bool m_screen_blank;
uint8_t m_monitor_suggested;
@@ -806,12 +802,15 @@ private:
UPD7220_DISPLAY_PIXELS_MEMBER( rainbow_state::hgdc_display_pixels )
{
+ if(m_inp7->read() == 0)
+ return;
+
const rgb_t *paletteX = m_palette2->palette()->entry_list_raw();
uint16_t plane0, plane1, plane2, plane3;
uint8_t pen;
- if (m_onboard_graphics_selected && (m_inp13->read() != DUAL_MONITOR))
+ if (m_onboard_video_selected && (m_inp13->read() != DUAL_MONITOR))
{
for (int xi = 0; xi < 16; xi++) // blank screen when VT102 output active (..)
{
@@ -1253,9 +1252,7 @@ void rainbow_state::machine_reset()
OPTION_RESET_PATTERNS
for (int i = 0; i < 32; i++)
- {
m_gdc_color_map[i] = 0x00;
- };
m_gdc_color_map_index = 0;
// *********** Z80
@@ -1353,7 +1350,7 @@ uint32_t rainbow_state::screen_update_rainbow(screen_device &screen, bitmap_ind1
}
int palette_selected;
- if (m_onboard_graphics_selected && (m_monitor_suggested == COLOR_MONITOR))
+ if (m_onboard_video_selected && (m_monitor_suggested == COLOR_MONITOR))
palette_selected = 2; // Color monitor; green text
else
palette_selected = m_inp9->read();
@@ -1361,7 +1358,7 @@ uint32_t rainbow_state::screen_update_rainbow(screen_device &screen, bitmap_ind1
m_crtc->palette_select(palette_selected);
m_crtc->video_update(bitmap, cliprect);
- if (m_screen_blank || ((!m_onboard_graphics_selected) && (m_inp13->read() != DUAL_MONITOR))) // dual monitor: never blank all
+ if (m_screen_blank || ((!m_onboard_video_selected) && (m_inp13->read() != DUAL_MONITOR))) // dual monitor: never blank all
m_crtc->video_blanking(bitmap, cliprect);
else
m_crtc->video_update(bitmap, cliprect);
@@ -2531,10 +2528,6 @@ IRQ_CALLBACK_MEMBER(rainbow_state::irq_callback)
if (i == IRQ_8088_VBL) // If VBL IRQ acknowledged...
m_crtc->MHFU(MHFU_RESET); // ...reset counter (also: DC012_W)
-// Edstrom: "The call to m1_r() on line 2571 is not needed as the 7201 does not have an M1 input, instead it expects to get a software iack."
-// if (i == IRQ_COMM_PTR_INTR_L)
-// m_mpsc->m1_r(); // serial interrupt acknowledge
-
intnum = vectors[i] | m_irq_high;
break;
}
@@ -2695,21 +2688,21 @@ WRITE8_MEMBER(rainbow_state::diagnostic_w) // 8088 (port 0A WRITTEN). Fig.4-28 +
m_fdc->reset(); // See formatter description p.197 or 5-13
}
- m_screen_blank = BIT(data, 1);
+ m_screen_blank = BIT(data, 1)? false : true; // inverse logic
// Switch determines how the monochrome output pin is taken from:
// 0 = M(ono) out from system module (DC011/DC012). Default, also used to setup dual monitors.
// 1 = M(ono) output from GRAPHICS OPTION. (G)reen remains unused with a single COLOR monitor.
- m_onboard_graphics_selected = (data & 0x04) ? false : true;
- if (!m_onboard_graphics_selected)
+ m_onboard_video_selected = (data & 0x04) ? false : true;
+ if (!m_onboard_video_selected)
{
if (m_inp7->read() == 1)
{
printf("\nHINT: GRAPHICS OPTION ON. TEXT ONLY (DC011/DC012) OUTPUT NOW DISABLED.\n");
}
else
- { printf("\nALARM: GRAPHICS OPTION * SWITCHED OFF * VIA DIP. TEXT OUTPUT STILL ENABLED!\n");
- m_onboard_graphics_selected = true;
+ { printf("\nALARM: GRAPHICS OPTION * SWITCHED OFF * VIA DIP. TEXT OUTPUT STILL ENABLED!\n");
+ m_onboard_video_selected = true;
}
logerror("DATA: %x (PC=%x)\n", data, m_i8088->pc());
}
@@ -3260,10 +3253,10 @@ MACHINE_CONFIG_START(rainbow_state::rainbow)
FD1793(config, m_fdc, 24.0734_MHz_XTAL / 24); // no separate 1 Mhz quartz
MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":0", rainbow_floppies, "525qd", rainbow_state::floppy_formats)
MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":1", rainbow_floppies, "525qd", rainbow_state::floppy_formats)
- //MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":2", rainbow_floppies, "525qd", rainbow_state::floppy_formats)
- //MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":3", rainbow_floppies, "525qd", rainbow_state::floppy_formats)
- MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":2", rainbow_floppies, "525dd", rainbow_state::floppy_formats)
- MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":3", rainbow_floppies, "35dd", rainbow_state::floppy_formats)
+ MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":2", rainbow_floppies, "525qd", rainbow_state::floppy_formats)
+ MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":3", rainbow_floppies, "525qd", rainbow_state::floppy_formats)
+ //MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":2", rainbow_floppies, "525dd", rainbow_state::floppy_formats)
+ //MCFG_FLOPPY_DRIVE_ADD(FD1793_TAG ":3", rainbow_floppies, "35dd", rainbow_state::floppy_formats)
MCFG_SOFTWARE_LIST_ADD("flop_list", "rainbow")
/// ********************************* HARD DISK CONTROLLER *****************************************
@@ -3455,4 +3448,3 @@ ROM_END
COMP(1982, rainbow100a, rainbow, 0, rainbow, rainbow100b_in, rainbow_state, empty_init, "Digital Equipment Corporation", "Rainbow 100-A", MACHINE_IS_SKELETON)
COMP(1983, rainbow, 0, 0, rainbow, rainbow100b_in, rainbow_state, empty_init, "Digital Equipment Corporation", "Rainbow 100-B", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_COLORS)
COMP(1985, rainbow190, rainbow, 0, rainbow, rainbow100b_in, rainbow_state, empty_init, "Digital Equipment Corporation", "Rainbow 190-B", MACHINE_NOT_WORKING | MACHINE_IMPERFECT_COLORS)
-