emul/z80: flatten directory structure

I'm about to reuse sdc.c in sms.c and the old directory structure
was becoming awkward.

emul/z80/.gitignore

@@ -1,2 +1,5 @@
 /forth
 /forth.bin
+/ti84
+/sms
+/rc2014

emul/z80/Makefile

@@ -1,5 +1,8 @@
-TARGETS = forth 
+TARGETS = forth rc2014 sms ti84
 OBJS = emul.o z80.o
+RC2014_OBJS = $(OBJS) sio.o acia.o sdc.o
+SMS_OBJS = $(OBJS) sms_vdp.o sms_ports.o sms_pad.o ps2_kbd.o
+TI84_OBJS = $(OBJS) t6a04.o ti84_kbd.o 
 CDIR = ../../cvm
 STAGE = $(CDIR)/stage
 BLKFS = $(CDIR)/blkfs
@@ -10,6 +13,15 @@ all: $(TARGETS)
 forth: forth.c $(OBJS) $(BLKFS)
 	$(CC) forth.c $(OBJS) -lncurses -o $@
 
+rc2014: rc2014.c $(RC2014_OBJS)
+	$(CC) rc2014.c $(RC2014_OBJS) -o $@
+
+sms: sms.c $(SMS_OBJS)
+	$(CC) sms.c $(SMS_OBJS) -o $@ `pkg-config --cflags --libs xcb`
+
+ti84: ti84.c $(TI84_OBJS)
+	$(CC) ti84.c $(TI84_OBJS) -o $@ `pkg-config --cflags --libs xcb`
+
 emul.o: emul.c forth.bin $(BLKFS)
 	$(CC) -DFBIN_PATH=\"`pwd`/forth.bin\" -DBLKFS_PATH=\"`pwd`/$(BLKFS)\" -c -o emul.o emul.c
 
@@ -23,4 +35,4 @@ $(STAGE):
 
 .PHONY: clean
 clean:
-	rm -f $(TARGETS) emul.o *.bin z80.o
+	rm -f $(TARGETS) *.o *.bin

emul/z80/README.md

@@ -1,4 +1,4 @@
-# emul
+# Z80 emulation
 
 This folder contains a couple of tools running under the [libz80][libz80]
 emulator.
@@ -8,23 +8,80 @@ emulator.
 You need `ncurses` to build the `forth` executable. In debian-based distros,
 it's `libncurses5-dev`.
 
+For `sms` and `ti84` emulators, you need XCB and pkg-config.
+
 ## Build
 
-Run `make` and it builds the `forth` interpreter.
+Running `make` builds all targets described below
 
-## Usage
+## Vanilla Forth
 
 The `./forth` executable here works like the one in `/cvm`, except that it runs
 under an emulated z80 machine instead of running natively. Refer to
 `/cvm/README.md` for details.
 
-## Not real hardware
-
 `./forth` doesn't try to emulate real hardware
 because the goal here is to facilitate "high level" development.
 
 These apps run on imaginary hardware and use many cheats to simplify I/Os.
 
-For real hardware emulation (which helps developing drivers), see subfolders.
+## RC2014 emulation
+
+This emulates a RC2014 classic with 8K of ROM, 32K of RAM and an ACIA hooked to
+stdin/stdout.
+
+Run `./rc2014 /path/to/rom` (for example, `os.bin` from RC2014's recipe).
+Serial I/O is hooked to stdin/stdout. `CTRL+D` to quit.
+
+There are 2 options. `-s` replaces the ACIA with a Zilog SIO and
+`-c/path/to/image` hooks up a SD card with specified contents.
+
+You can press `CTRL+E` to dump the whole 64K of memory into `memdump`.
+
+## Sega Master System emulator
+
+This emulates a Sega Master system with a monochrome screen and a Genesis pad
+hooked to port A.
+
+Launch the emulator with `./sms /path/to/rom` (you can use the binary from the
+`sms` recipe.
+
+This will show a window with the screen's content on it. The mappings to the
+pad are:
+
+* W --> Up
+* A --> Left
+* S --> Down
+* D --> Right
+* H --> A
+* J --> B
+* K --> C
+* L --> Start
+
+If your ROM is configured with PS/2 keyboard input, run this emulator with the
+`-k` flag to replace SMS pad emulation with keyboard emulation.
+
+In both cases (pad or keyboard), only port A emulation is supported.
+
+Press ESC to quit.
+
+## TI-84
+
+This emulates a TI-84+ with its screen and keyboard. This is suitable for
+running the `ti84` recipe.
+
+Launch the emulator with `./ti84 /path/to/rom` (you can use the binary from the
+`ti84` recipe. Use the small one, not the one having been filled to 1MB).
+
+This will show a window with the LCD screen's content on it. Most applications,
+upon boot, halt after initialization and stay halted until the ON key is
+pressed. The ON key is mapped to the tilde (~) key.
+
+Press ESC to quit.
+
+As for the rest of the mappings, they map at the key level. For example, the 'Y'
+key maps to '1' (which yields 'y' when in alpha mode). Therefore, '1' and 'Y'
+map to the same calculator key. Backspace maps to DEL.
 
+Left Shift maps to 2nd. Left Ctrl maps to Alpha.
 [libz80]: https://github.com/ggambetta/libz80

emul/z80/sms/kbd.c → emul/z80/ps2_kbd.c

@@ -1,4 +1,4 @@
-#include "kbd.h"
+#include "ps2_kbd.h"
 
 void kbd_init(Kbd *kbd, Tristate *TH)
 {

emul/z80/sms/kbd.h → emul/z80/ps2_kbd.h

@@ -1,6 +1,6 @@
 #include <stdint.h>
 #include <stdbool.h>
-#include "port.h"
+#include "emul.h"
 
 #define KBD_BUFSZ 0x10
 

emul/z80/rc2014/classic.c → emul/z80/rc2014.c

@@ -11,7 +11,7 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <termios.h>
-#include "../emul.h"
+#include "emul.h"
 #include "acia.h"
 #include "sio.h"
 #include "sdc.h"

emul/z80/rc2014/.gitignore

@@ -1 +0,0 @@
-/classic

emul/z80/rc2014/Makefile

@@ -1,16 +0,0 @@
-EXTOBJS = ../emul.o ../z80.o
-OBJS = sio.o acia.o sdc.o classic.o 
-TARGET = classic
-
-.PHONY: all
-all: $(TARGET)
-
-../emul.o:
-	make -C ..
-
-$(TARGET): $(OBJS) $(EXTOBJS)
-	$(CC) $(OBJS) $(EXTOBJS) -o $@
-
-.PHONY: clean
-clean:
-	rm -f $(TARGET) $(OBJS)

emul/z80/rc2014/README.md

@@ -1,18 +0,0 @@
-# RC2014 emulation
-
-This emulates a RC2014 classic with 8K of ROM, 32K of RAM and an ACIA hooked to
-stdin/stdout.
-
-Run `make` to build.
-
-## Usage
-
-Run `./classic /path/to/rom` (for example, `os.bin` from RC2014's recipe).
-Serial I/O is hooked to stdin/stdout. `CTRL+D` to quit.
-
-There are 2 options. `-s` replaces the ACIA with a Zilog SIO and
-`-c/path/to/image` hooks up a SD card with specified contents.
-
-## Memory dump
-
-You can press `CTRL+E` to dump the whole 64K of memory into `memdump`.

emul/z80/sms/sms.c → emul/z80/sms.c

@@ -7,11 +7,11 @@
 #define XK_MISCELLANY
 #include <X11/keysymdef.h>
 
-#include "../emul.h"
-#include "vdp.h"
-#include "port.h"
-#include "pad.h"
-#include "kbd.h"
+#include "emul.h"
+#include "sms_vdp.h"
+#include "sms_ports.h"
+#include "sms_pad.h"
+#include "ps2_kbd.h"
 
 #define RAMSTART 0xc000
 #define VDP_CMD_PORT 0xbf

emul/z80/sms/.gitignore

@@ -1 +0,0 @@
-/sms

emul/z80/sms/Makefile

@@ -1,19 +0,0 @@
-EXTOBJS = ../emul.o ../z80.o
-OBJS = sms.o vdp.o port.o pad.o kbd.o
-TARGET = sms
-CFLAGS += `pkg-config --cflags xcb`
-LDFLAGS += `pkg-config --libs xcb`
-
-.PHONY: all
-all: $(TARGET)
-
-../emul.o:
-	make -C ..
-
-$(TARGET): $(OBJS) $(EXTOBJS)
-	$(CC) $(OBJS) $(EXTOBJS) -o $@ $(LDFLAGS)
-
-.PHONY: clean
-clean:
-	rm -f $(TARGET) $(OBJS)
-	

emul/z80/sms/README.md

@@ -1,33 +0,0 @@
-# Sega Master System emulator
-
-This emulates a Sega Master system with a monochrome screen and a Genesis pad
-hooked to port A.
-
-## Build
-
-You need `xcb` and `pkg-config` to build this. If you have them, run `make`.
-You'll get a `sms` executable.
-
-## Usage
-
-Launch the emulator with `./sms /path/to/rom` (you can use the binary from the
-`sms` recipe.
-
-This will show a window with the screen's content on it. The mappings to the
-pad are:
-
-* W --> Up
-* A --> Left
-* S --> Down
-* D --> Right
-* H --> A
-* J --> B
-* K --> C
-* L --> Start
-
-If your ROM is configured with PS/2 keyboard input, run this emulator with the
-`-k` flag to replace SMS pad emulation with keyboard emulation.
-
-In both cases (pad or keyboard), only port A emulation is supported.
-
-Press ESC to quit.

emul/z80/sms/pad.c → emul/z80/sms_pad.c

@@ -1,4 +1,4 @@
-#include "pad.h"
+#include "sms_pad.h"
 
 void pad_init(Pad *pad, Tristate *TH)
 {

emul/z80/sms/pad.h → emul/z80/sms_pad.h

@@ -1,6 +1,6 @@
 #include <stdint.h>
 #include <stdbool.h>
-#include "port.h"
+#include "emul.h"
 
 typedef enum {
     PAD_BTN_UP = 0,

emul/z80/sms/port.c → emul/z80/sms_ports.c

@@ -1,4 +1,4 @@
-#include "port.h"
+#include "sms_ports.h"
 
 void ports_init(Ports *ports)
 {

emul/z80/sms/port.h → emul/z80/sms_ports.h

@@ -1,5 +1,5 @@
 #pragma once
-#include "../emul.h"
+#include "emul.h"
 
 // Each port is a bitmask of each pin's status. 1 means high.
 // From Bit 0 to 6: up, down, left, right, TL, TR, TH

emul/z80/sms/vdp.c → emul/z80/sms_vdp.c

@@ -1,5 +1,5 @@
 #include <string.h>
-#include "vdp.h"
+#include "sms_vdp.h"
 
 void vdp_init(VDP *vdp)
 {

emul/z80/ti/.gitignore

@@ -1 +0,0 @@
-/ti84

emul/z80/ti/Makefile

@@ -1,19 +0,0 @@
-EXTOBJS = ../emul.o ../z80.o
-OBJS = ti84.o t6a04.o kbd.o 
-TARGET = ti84
-CFLAGS += `pkg-config --cflags xcb`
-LDFLAGS += `pkg-config --libs xcb`
-
-.PHONY: all
-all: $(TARGET)
-
-../emul.o:
-	make -C ..
-
-$(TARGET): $(OBJS) $(EXTOBJS)
-	$(CC) $(OBJS) $(EXTOBJS) -o $@ $(LDFLAGS)
-
-.PHONY: clean
-clean:
-	rm -f $(TARGET) $(OBJS)
-	

emul/z80/ti/README.md

@@ -1,26 +0,0 @@
-# TI-84+ emulator
-
-This emulates a TI-84+ with its screen and keyboard. This is suitable for
-running the `ti84` recipe.
-
-## Build
-
-You need `xcb` and `pkg-config` to build this. If you have them, run `make`.
-You'll get a `ti84` executable.
-
-## Usage
-
-Launch the emulator with `./ti84 /path/to/rom` (you can use the binary from the
-`ti84` recipe. Use the small one, not the one having been filled to 1MB).
-
-This will show a window with the LCD screen's content on it. Most applications,
-upon boot, halt after initialization and stay halted until the ON key is
-pressed. The ON key is mapped to the tilde (~) key.
-
-Press ESC to quit.
-
-As for the rest of the mappings, they map at the key level. For example, the 'Y'
-key maps to '1' (which yields 'y' when in alpha mode). Therefore, '1' and 'Y'
-map to the same calculator key. Backspace maps to DEL.
-
-Left Shift maps to 2nd. Left Ctrl maps to Alpha.

emul/z80/ti/ti84.c → emul/z80/ti84.c

@@ -14,9 +14,9 @@
 #define XK_MISCELLANY
 #include <X11/keysymdef.h>
 
-#include "../emul.h"
+#include "emul.h"
 #include "t6a04.h"
-#include "kbd.h"
+#include "ti84_kbd.h"
 
 #define RAMSTART 0x8000
 #define KBD_PORT 0x01

emul/z80/ti/kbd.c → emul/z80/ti84_kbd.c

@@ -1,7 +1,7 @@
 #include <string.h>
 #include <ctype.h>
 
-#include "kbd.h"
+#include "ti84_kbd.h"
 
 void kbd_init(KBD *kbd)
 {

recipes/rc2014/Makefile

@@ -4,7 +4,7 @@ CDIR = $(BASE)/cvm
 EDIR = $(BASE)/emul/z80
 STAGE = $(CDIR)/stage
 BLKPACK = $(BASE)/tools/blkpack
-EMUL = $(EDIR)/rc2014/classic
+EMUL = $(EDIR)/rc2014
 
 .PHONY: all
 all: $(TARGET) 
@@ -21,7 +21,7 @@ $(STAGE):
 	$(MAKE) -C $(CDIR) stage
 
 $(EMUL):
-	$(MAKE) -C ${@:%/classic=%}
+	$(MAKE) -C $(EDIR)
 
 .PHONY: emul
 emul: $(EMUL) $(TARGET)

recipes/sms/Makefile

@@ -3,7 +3,7 @@ BASE = ../..
 STAGE = $(BASE)/cvm/stage
 BLKPACK = $(BASE)/tools/blkpack
 SMSROM = $(BASE)/tools/smsrom
-EMUL = $(BASE)/emul/z80/sms/sms
+EMUL = $(BASE)/emul/z80/sms
 
 .PHONY: all
 all: $(TARGET) 

recipes/ti84/Makefile

@@ -3,7 +3,7 @@ BASE = ../..
 CDIR = $(BASE)/cvm
 STAGE = $(CDIR)/stage
 BLKPACK = $(BASE)/tools/blkpack
-EMUL = $(BASE)/emul/z80/ti/ti84
+EMUL = $(BASE)/emul/z80/ti84
 MKTIUPGRADE = mktiupgrade
 
 .PHONY: all
@@ -26,7 +26,7 @@ $(EMUL):
 .PHONY: emul
 emul: $(EMUL) $(TARGET)
 	$(EMUL) $(TARGET)
-	
+
 os.rom: $(TARGET)
 	dd if=$(TARGET) bs=1M of=$@ conv=sync