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Additional assertions for the return value of mmap_read8 and mmap_read16

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Fabian 2021-04-29 17:25:20 -05:00
parent 23d4f862e6
commit 65a75d4fe3
1 changed files with 6 additions and 3 deletions
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9
src/memory.js
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@ -3,7 +3,9 @@
CPU.prototype.mmap_read8 = function(addr) CPU.prototype.mmap_read8 = function(addr)
{ {
return this.memory_map_read8[addr >>> MMAP_BLOCK_BITS](addr); const value = this.memory_map_read8[addr >>> MMAP_BLOCK_BITS](addr);
dbg_assert(value >= 0 && value <= 0xFF);
return value;
}; };
CPU.prototype.mmap_write8 = function(addr, value) CPU.prototype.mmap_write8 = function(addr, value)
@ -15,8 +17,9 @@ CPU.prototype.mmap_write8 = function(addr, value)
CPU.prototype.mmap_read16 = function(addr) CPU.prototype.mmap_read16 = function(addr)
{ {
var fn = this.memory_map_read8[addr >>> MMAP_BLOCK_BITS]; var fn = this.memory_map_read8[addr >>> MMAP_BLOCK_BITS];
const value = fn(addr) | fn(addr + 1 | 0) << 8;
return fn(addr) | fn(addr + 1 | 0) << 8; dbg_assert(value >= 0 && value <= 0xFFFF);
return value;
}; };
CPU.prototype.mmap_write16 = function(addr, value) CPU.prototype.mmap_write16 = function(addr, value)