Reorganize ROM storage

include/apple2.mem.h

@@ -23,10 +23,13 @@
     (0xC000 + (n << 8))
 
 /*
- * This is the size of any peripheral's ROM that we can hold in memory
- * (which is any page from $C100 - $C700).
+ * This is the total size of the ROM we hold devoted to peripherals. It
+ * is meant to be mapped directly to the entire $C000..$CFFF space; it's
+ * zero-padded for the $C0 page, and is also zero-padded in $C8..$CF;
+ * the latter being reserved for expansion peripheral ROM usage, and the
+ * former for the I/O soft switches that the Apple II has.
  */
-#define APPLE2_PERIPHERAL_SIZE 0x700
+#define APPLE2_PERIPHERAL_SIZE 0x1000
 
 /*
  * Peripheral ROM can only occupy a single page in memory.
@@ -40,9 +43,10 @@
 #define APPLE2_SYSROM_SIZE 0x4000
 
 /*
- * The size of our block of ROM is 12k
+ * The size of our block of ROM is 20k; 16k for internal ROM, 4k to
+ * contain all of the peripheral ROM above.
  */
-#define APPLE2_ROM_SIZE 0x3000
+#define APPLE2_ROM_SIZE 0x5000
 
 /*
  * At the highest point (with the IIe extended 80 column text card), you

include/objstore.h

@@ -8,8 +8,8 @@
 
 typedef struct {
     char header[4];
-    vm_8bit apple2_peripheral_rom[APPLE2_PERIPHERAL_SIZE];
     vm_8bit apple2_sys_rom[APPLE2_SYSROM_SIZE];
+    vm_8bit apple2_peripheral_rom[APPLE2_PERIPHERAL_SIZE];
     vm_8bit apple2_sysfont[APPLE2_SYSFONT_SIZE];
 } objstore;
 

src/apple2.mem.c

@@ -67,25 +67,23 @@ apple2_mem_init_sys_rom(apple2 *mach)
 {
     int err;
     const vm_8bit *sysrom;
+    const vm_8bit *prom;
     
     sysrom = objstore_apple2_sys_rom();
+    prom = objstore_apple2_peripheral_rom();
 
-    // The first two kilobytes of system rom are copied into memory
-    // beginning at $C800 (which is just after all of the peripheral ROM
-    // locations).
-    err = vm_segment_copy_buf(mach->main, sysrom,
-                              0xC800, 0x800, 0x800);
+    err = vm_segment_copy_buf(mach->rom, sysrom, 
+                              0, 0, APPLE2_SYSROM_SIZE);
     if (err != OK) {
         log_critical("Could not copy apple2 system rom");
         return ERR_BADFILE;
     }
 
-    // The last 12k of sysrom (which is APPLE2_ROM_SIZE) are copied into
-    // the rom segment.
-    err = vm_segment_copy_buf(mach->rom, sysrom, 
-                              0, 0x1000, APPLE2_ROM_SIZE);
+    err = vm_segment_copy_buf(mach->rom, prom,
+                              APPLE2_SYSROM_SIZE, 0, 
+                              APPLE2_PERIPHERAL_SIZE);
     if (err != OK) {
-        log_critical("Could not copy apple2 system rom");
+        log_critical("Could not copy apple2 peripheral rom");
         return ERR_BADFILE;
     }
 

src/apple2.pc.c

@@ -0,0 +1,40 @@
+/*
+ * apple2.pc.c
+ *
+ * No, not "personal computer"; pc as in "peripheral card". The code
+ * here is all about support for peripherals in general, excusing
+ * support written for specific peripherals such as disk drives
+ * (apple2.dd.c).
+ */
+
+#include "apple2.h"
+#include "vm_segment.h"
+
+/*
+ * Map all of the peripheral ROM space (and peripheral expansion ROM
+ * space) to our read and write mappers for that. For reference, normal
+ * peripheral ROM space is $C100..$C7FF, and expansion ROM is
+ * $C800..$CFFF.
+ */
+void
+apple2_pc_map(apple2 *mach, vm_segment *seg)
+{
+    size_t addr;
+
+    for (addr = 0xC100; addr < 0xD000; addr++) {
+        vm_segment_read_map(seg, addr, apple2_pc_read);
+        vm_segment_write_map(seg, addr, apple2_pc_write);
+    }
+}
+
+SEGMENT_READER(apple2_pc_read)
+{
+    apple2 *mach = (apple2 *)_mach;
+
+    if (mach->memory_mode & MEMORY_EXPROM) {
+    }
+
+    if (mach->memory_mode & MEMORY_SLOTCXROM) {
+        segment = mach->rom;
+    }
+}

tools/store-data

@@ -13,23 +13,14 @@ data = 'hope'
 
 # These must be appended in the exact order indicated by the struct definition
 # in objstore.h
-data += file_data('./data/print.rom')           # $C100
-data += file_data('./data/serial.rom')          # $C200
-data += file_data('./data/zeropad0x100.rom')    # $C300
-data += file_data('./data/zeropad0x100.rom')    # $C400
-data += file_data('./data/zeropad0x100.rom')    # $C500
-data += file_data('./data/disk2.rom')           # $C600
-data += file_data('./data/disk2.rom')           # $C700
-data += file_data('./data/apple2.rom')          # $D000
+data += file_data('./data/apple2.rom')          # Internal ROM ($C000..$FFFF)
+data += file_data('./data/peripheral.rom')      # $C000..$CFFF
 data += file_data('./fonts/apple2-system.bmp')
 
 # Let's not keep calling len(data) since we know it won't change over our
 # iterations
 data_len = len(data)
 
-print data_len
-exit(0)
-
 # This just defines the variable name for the store data
 sys.stdout.write("static unsigned char store_data[] =\n")