Add support for SDL2

Makefile

@@ -142,5 +142,7 @@ distclean:
 		$(MAKE) -C $$subdir/srcsim distclean; \
 	done
 
+.NOTPARALLEL: all
+
 .PHONY: all tools libs bioses misc machines reassemble FORCE \
 		install uninstall clean distclean

README.md

@@ -8,14 +8,22 @@ Full documentation is at https://www.icl1900.co.uk/unix4fun/z80pack
 ## Ubuntu 
 
 ### Building
-First install the needed dependencies:
+First install the needed dependencies for X11:
 
     sudo apt install build-essential libglu1-mesa-dev libjpeg9-dev
 
-Then run 
+or for SDL2:
+
+    sudo apt install build-essential libsdl2-dev libsdl2-image-dev
+
+Then for X11 run  
 
     make
 
+or for SDL2 run  
+
+    WANT_SDL=YES make
+
 to build all the MACHINES mentioned in the Makefile.  
 
 ## Release vs Development
@@ -42,7 +50,8 @@ finished release.
 
 ### Running CP/M 2.2
 
-CP/M 2.2 is the ancestor of MS-DOS. Use this command to invoke CP/M 2.2 with two disks containing some sample programs and sources.
+CP/M 2.2 is the ancestor of MS-DOS. Use this command to invoke CP/M 2.2 with
+two disks containing some sample programs and sources.
 
 
     (cd cpmsim; ./cpm22)
@@ -92,7 +101,8 @@ Clock frequency 630.22 MHz
 
 ### Running CP/M 3
 
-CP/M 3 was the next generation of CP/M with features from MP/M to notably be able to use more RAM along with a lot of other nice features.  
+CP/M 3 was the next generation of CP/M with features from MP/M to notably
+be able to use more RAM along with a lot of other nice features.  
 
 Run with:
 
@@ -173,10 +183,11 @@ A>dir a:
 A: CPM3     SYS : VT100DYN COM : TRACE    UTL : HIST     UTL : PROFILE  SUB
 SYSTEM FILE(S) EXIST
 A>dir b:
-B: BNKBDOS3 SPR : CPM3     SYS : LDRBIOS3 MAC : SCB      MAC : RESBDOS3 SPR : BIOS3    MAC : PATCH    COM
-B: GENCPM   COM : BDOS3    SPR : GENCPM   DAT : BOOT     Z80 : M80      COM : LINK     COM : L80      COM
-B: WM       COM : MAC      COM : WM       HLP : BNKBIOS3 SPR : LDR      SUB : INITDIR  COM : CPMLDR   COM
-B: COPYSYS  COM : CPMLDR   REL : RMAC     COM : SYSGEN   SUB
+B: BNKBDOS3 SPR : CPM3     SYS : LDRBIOS3 MAC : SCB      MAC : RESBDOS3 SPR
+B: BIOS3    MAC : PATCH    COM : GENCPM   COM : BDOS3    SPR : GENCPM   DAT
+B: BOOT     Z80 : M80      COM : LINK     COM : L80      COM : WM       COM
+B: MAC      COM : WM       HLP : BNKBIOS3 SPR : LDR      SUB : INITDIR  COM
+B: CPMLDR   COM : COPYSYS  COM : CPMLDR   REL : RMAC     COM : SYSGEN   SUB
 A>bye
 
 System halted

altairsim/conf/system.conf

@@ -33,16 +33,16 @@ fp_size			800
 # front panel port value for machine without fp in hex (00 - FF)
 fp_port			0
 
-# VDM background and foreground colors in hex RGB format
+# VDM background and foreground colors in RGB format
 # white Monitor
-vdm_bg			303030
-vdm_fg			FFFFFF
+vdm_bg			48,48,48
+vdm_fg			255,255,255
 # green Monitor
-#vdm_bg			002000
-#vdm_fg			00BF00
+#vdm_bg			0,32,0
+#vdm_fg			0,191,0
 # amber Monitor
-#vdm_bg			202000
-#vdm_fg			FFBF00
+#vdm_bg			32,32,0
+#vdm_fg			255,191,0
 # Add scanlines to VDM monitor, 0 = no scanlines
 vdm_scanlines		1
 

altairsim/srcsim/Makefile

@@ -5,7 +5,9 @@
 # and the executable saved as '../machinesim'
 MACHINE = altair
 # emulate a machine's frontpanel
-FRONTPANEL = YES
+FRONTPANEL ?= YES
+# use SDL2 instead of X11
+WANT_SDL ?= NO
 # machine specific system source files
 MACHINE_SRCS = simcfg.c simio.c simmem.c simctl.c
 # machine specific I/O source files
@@ -34,28 +36,6 @@ ROMS_DIR = $(DATADIR)/roms
 ### END MACHINE DEPENDENT VARIABLES
 ###
 
-###
-### FRONTPANEL VARIABLES
-###
-ifeq ($(FRONTPANEL),YES)
-FP_SRCS = fpmain.cpp
-FP_DEFS = -DFRONTPANEL
-FP_LIB = $(FP_DIR)/libfrontpanel.a
-FP_LDLIBS = -lfrontpanel -ljpeg -lGL -lGLU
-LINK = $(CXX)
-LINKFLAGS = $(CXXFLAGS)
-else
-FP_SRCS =
-FP_DEFS =
-FP_LIB =
-FP_LDLIBS =
-LINK = $(CC)
-LINKFLAGS = $(CFLAGS)
-endif
-###
-### END FRONTPANEL VARIABLES
-###
-
 SIM = ../$(MACHINE)sim
 
 CORE_DIR = ../../z80core
@@ -64,85 +44,111 @@ FP_DIR = ../../frontpanel
 
 VPATH = $(CORE_DIR) $(IO_DIR) $(FP_DIR)
 
-###
-### START O/S PLATFORM DEPENDENT VARIABLES
-###
 include $(CORE_DIR)/Makefile.in-os
 
+###
+### SDL2/X11 PLATFORM VARIABLES
+###
+ifeq ($(WANT_SDL),YES)
+PLAT_DEFS = -DWANT_SDL
+ifeq ($(TARGET_OS),BSD)
+PLAT_INCS = -I/usr/local/include/SDL2
+PLAT_LDFLAGS = -L/usr/local/lib
+PLAT_LDLIBS = -lSDL2 -lSDL2main
+else ifeq ($(TARGET_OS),LINUX)
+PLAT_INCS = -I/usr/include/SDL2
+PLAT_LDLIBS = -lSDL2 -lSDL2main
+else ifeq ($(TARGET_OS),OSX)
+PLAT_INCS = -F/Library/Frameworks -I/Library/Frameworks/SDL2.framework/Headers
+PLAT_LDFLAGS = -Wl,-search_paths_first -Wl,-headerpad_max_install_names \
+	-Wl,-rpath,/Library/Frameworks
+PLAT_LDLIBS = -framework SDL2
+endif
+else
 ifeq ($(TARGET_OS),BSD)
 PLAT_INCS = -I/usr/local/include
 PLAT_LDFLAGS = -L/usr/local/lib
-PLAT_LDLIBS = -lthr
+PLAT_LDLIBS = -lX11
+else ifeq ($(TARGET_OS),LINUX)
+PLAT_LDLIBS = -lX11
+else ifeq ($(TARGET_OS),OSX)
+PLAT_INCS = -I/opt/X11/include -I/opt/local/include -I/usr/local/include
+PLAT_LDFLAGS = -L/opt/X11/lib -L/usr/local/lib
+PLAT_LDLIBS = -lX11
 endif
-ifeq ($(TARGET_OS),LINUX)
-PLAT_LDLIBS = -lm -lpthread
 endif
+###
+### END SDL2/X11 PLATFORM VARIABLES
+###
+
+###
+### FRONTPANEL VARIABLES
+###
+ifeq ($(FRONTPANEL),YES)
+FP_DEFS = -DFRONTPANEL
+FP_LIB = $(FP_DIR)/libfrontpanel.a
+ifeq ($(WANT_SDL),YES)
 ifeq ($(TARGET_OS),OSX)
-PLAT_INCS = -I/opt/X11/include
-PLAT_LDFLAGS = -L/usr/local/lib -L/opt/X11/lib
+FP_LDLIBS = -lfrontpanel -framework SDL2_image -framework OpenGL
+else
+FP_LDLIBS = -lfrontpanel -lSDL2_image -lGL
+endif
+else
+FP_LDLIBS = -lfrontpanel -ljpeg -lGL
+endif
 endif
 ###
-### END O/S DEPENDENT VARIABLES
+### END FRONTPANEL VARIABLES
 ###
 
 DEFS = -DCONFDIR=\"$(CONF_DIR)\" -DDISKSDIR=\"$(DISKS_DIR)\" \
-	-DBOOTROM=\"$(ROMS_DIR)\" $(FP_DEFS)
+	-DBOOTROM=\"$(ROMS_DIR)\" $(FP_DEFS) $(PLAT_DEFS)
 INCS = -I. -I$(CORE_DIR) -I$(IO_DIR) -I$(FP_DIR) $(PLAT_INCS)
 CPPFLAGS = $(DEFS) $(INCS)
 
 CSTDS = -std=c99 -D_DEFAULT_SOURCE # -D_XOPEN_SOURCE=700L
 CWARNS = -Wall -Wextra -Wwrite-strings
-CXXSTDS = -std=c++03 -D_DEFAULT_SOURCE # -D_XOPEN_SOURCE=700L
-CXXWARNS = -Wall -Wextra
 
 # Production - the default
 COPTS = -O3 -U_FORTIFY_SOURCE
-CXXOPTS = -O3 -U_FORTIFY_SOURCE
 
 # Development - use `MODE=DEV make build`
 ifeq ($(MODE),DEV)
 COPTS = -O3 -fstack-protector-all -D_FORTIFY_SOURCE=2
-CXXOPTS = -O3 -fstack-protector-all -D_FORTIFY_SOURCE=2
 endif
 
 # Debug - use `DEBUG=1 make build`
 ifneq ($(DEBUG),)
 COPTS = -O -g
-CXXOPTS = -O -g
 endif
 
-CFLAGS = $(CSTDS) $(COPTS) $(CWARNS) $(PLAT_CFLAGS)
-CXXFLAGS = $(CXXSTDS) $(CXXOPTS) $(CXXWARNS) $(PLAT_CXXFLAGS)
+CFLAGS = $(CSTDS) $(COPTS) $(CWARNS)
 
 LDFLAGS = -L$(FP_DIR) $(PLAT_LDFLAGS)
-LDLIBS = $(FP_LDLIBS) -lX11 $(PLAT_LDLIBS)
+LDLIBS = $(FP_LDLIBS) $(PLAT_LDLIBS) -lm -lpthread
 
 INSTALL = install
 INSTALL_PROGRAM = $(INSTALL)
 INSTALL_DATA = $(INSTALL) -m 644
 
 # core system source files for the CPU simulation
 CORE_SRCS = sim8080.c simcore.c simdis.c simfun.c simglb.c simice.c simint.c \
-	simmain.c simz80.c simz80-cb.c simz80-dd.c simz80-ddcb.c simz80-ed.c \
-	simz80-fd.c simz80-fdcb.c
+	simmain.c simsdl.c simz80.c simz80-cb.c simz80-dd.c simz80-ddcb.c \
+	simz80-ed.c simz80-fd.c simz80-fdcb.c
 SRCS = $(CORE_SRCS) $(MACHINE_SRCS) $(IO_SRCS)
-XXSRCS = $(FP_SRCS)
-OBJS = $(SRCS:.c=.o) $(XXSRCS:.cpp=.o)
-DEPS = $(SRCS:.c=.d) $(XXSRCS:.cpp=.d)
+OBJS = $(SRCS:.c=.o)
+DEPS = $(SRCS:.c=.d)
 
 all: $(SIM)
 
 $(SIM): $(OBJS) $(FP_LIB)
-	$(LINK) $(LINKFLAGS) $(CPPFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@
+	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@
 
 $(DEPS): sim.h
 
 %.d: %.c
 	@$(CC) -MM $(CFLAGS) $(CPPFLAGS) $< > $@
 
-%.d: %.cpp
-	@$(CXX) -MM $(CXXFLAGS) $(CPPFLAGS) $< > $@
-
 -include $(DEPS)
 
 $(FP_LIB): FORCE

altairsim/srcsim/simcfg.c

@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2008-2021 Udo Munk
  * Copyright (C) 2021 David McNaughton
+ * Copyright (C) 2025 by Thomas Eberhardt
  *
  * This module reads the system configuration file and sets
  * global variables, so that the system can be configured.
@@ -29,6 +30,7 @@
  * 22-JAN-2021 added option for config file
  * 31-JUL-2021 allow building machine without frontpanel
  * 29-AUG-2021 new memory configuration sections
+ * 03-JAN-2025 changed colors configuration to RGB-triple
  */
 
 #include <stddef.h>
@@ -59,7 +61,7 @@ void config(void)
 	FILE *fp;
 	char buf[BUFSIZE];
 	char *s, *t1, *t2, *t3, *t4;
-	int v1, v2;
+	int v1, v2, v3;
 	char fn[MAX_LFN - 1];
 
 	int num_segs = 0;
@@ -224,9 +226,53 @@ void config(void)
 				fp_size = atoi(t2);
 #endif
 			} else if (!strcmp(t1, "vdm_bg")) {
-				strncpy(&bg_color[1], t2, 6);
+				if ((t3 = strtok(NULL, " \t,")) == NULL ||
+				    (t4 = strtok(NULL, " \t,")) == NULL) {
+					LOGW(TAG, "missing parameter for %s", t1);
+					continue;
+				}
+				v1 = strtol(t2, NULL, 0);
+				if (v1 < 0 || v1 > 255) {
+					LOGW(TAG, "invalid red component %d", v1);
+					continue;
+				}
+				v2 = strtol(t3, NULL, 0);
+				if (v2 < 0 || v2 > 255) {
+					LOGW(TAG, "invalid green component %d", v2);
+					continue;
+				}
+				v3 = strtol(t4, NULL, 0);
+				if (v3 < 0 || v3 > 255) {
+					LOGW(TAG, "invalid blue component %d", v3);
+					continue;
+				}
+				bg_color[0] = v1;
+				bg_color[1] = v2;
+				bg_color[2] = v3;
 			} else if (!strcmp(t1, "vdm_fg")) {
-				strncpy(&fg_color[1], t2, 6);
+				if ((t3 = strtok(NULL, " \t,")) == NULL ||
+				    (t4 = strtok(NULL, " \t,")) == NULL) {
+					LOGW(TAG, "missing parameter for %s", t1);
+					continue;
+				}
+				v1 = strtol(t2, NULL, 0);
+				if (v1 < 0 || v1 > 255) {
+					LOGW(TAG, "invalid red component %d", v1);
+					continue;
+				}
+				v2 = strtol(t3, NULL, 0);
+				if (v2 < 0 || v2 > 255) {
+					LOGW(TAG, "invalid green component %d", v2);
+					continue;
+				}
+				v3 = strtol(t4, NULL, 0);
+				if (v3 < 0 || v3 > 255) {
+					LOGW(TAG, "invalid blue component %d", v3);
+					continue;
+				}
+				fg_color[0] = v1;
+				fg_color[1] = v2;
+				fg_color[2] = v3;
 			} else if (!strcmp(t1, "vdm_scanlines")) {
 				if (*t2 != '0')
 					slf = 2;