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Account for changes to rom segment structure

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This commit is contained in:
Peter Evans 2018-01-16 15:46:35 -06:00
parent caea83f9c6
commit bcf6b213a6
4 changed files with 13 additions and 8 deletions
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7
include/apple2.mem.h
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@ -56,7 +56,12 @@
#define APPLE2_AUX_SIZE 0x10000
/*
* This is the base address (or offset) for all bank-switched memory
* This is the base address for system / internal ROM.
*/
#define APPLE2_SYSROM_OFFSET 0xC000
/*
* This defines the base address for bank-switchable memory
*/
#define APPLE2_BANK_OFFSET 0xD000

2
src/apple2.bank.c
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@ -52,7 +52,7 @@ SEGMENT_READER(apple2_bank_read)
if (~mach->bank_switch & BANK_RAM) {
// We need to account for the difference in address location
// before we can successfully get any data from ROM.
return vm_segment_get(mach->rom, addr - APPLE2_BANK_OFFSET);
return vm_segment_get(mach->rom, addr - APPLE2_SYSROM_OFFSET);
}
// Each memory bank (main or auxiliary) have an additional 4k of RAM

8
tests/apple2.bank.c
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@ -65,8 +65,8 @@ Test(apple2_bank, read)
// when addressing from main memory
apple2_set_bank_switch(mach, BANK_WRITE);
val = 123;
vm_segment_set(mach->rom, 0x77, val);
val = vm_segment_get(mach->rom, 0x77);
vm_segment_set(mach->rom, 0x1077, val);
val = vm_segment_get(mach->rom, 0x1077);
cr_assert_eq(vm_segment_get(mach->main, 0xD077), val);
// In RAM1 bank mode, setting a value in memory should return thaty
@ -104,9 +104,9 @@ Test(apple2_bank, write)
// were).
right = 123;
wrong = 222;
vm_segment_set(mach->rom, 0x77, right);
vm_segment_set(mach->rom, 0x1077, right);
vm_segment_set(mach->main, 0xD077, wrong);
cr_assert_eq(vm_segment_get(mach->rom, 0x77), right);
cr_assert_eq(vm_segment_get(mach->rom, 0x1077), right);
cr_assert_eq(vm_segment_get(mach->main, 0xD077), right);
// RAM1 is the main bank; it's all 64k RAM in one chunk.

4
tests/apple2.c
View File

@ -141,8 +141,8 @@ Test(apple2, set_bank_switch)
Test(apple2, reset)
{
vm_segment_set(mach->rom, 0x2FFC, 0x34);
vm_segment_set(mach->rom, 0x2FFD, 0x12);
vm_segment_set(mach->rom, 0x3FFC, 0x34);
vm_segment_set(mach->rom, 0x3FFD, 0x12);
apple2_reset(mach);
cr_assert_eq(mach->cpu->PC, 0x1234);