> For the complete documentation index, see [llms.txt](https://docs.xeutrino.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.xeutrino.com/api-reference/memory.md).

# Raw memory access

These functions read and write absolute memory addresses. Addresses are typically obtained from `get_global_addr` or built from `get_app_base() + RVA`.

| :exclamation: Warning — crash risk                                                                                                                                       |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Raw memory writes can crash the game instantly if you target the wrong address. Validate non-zero addresses first and prefer the `*_global_*` helpers whenever possible. |

## `get_app_base()` → integer

Returns the current eboot base address. Use to turn an offset into a live pointer:

```lua
local addr = get_app_base() + 0x1A0AE60
```

## `read_int(address, size?)` → integer

Reads `size` bytes (1, 2, 4, or 8; default 4) from `address` and returns the little-endian value as a signed 64-bit integer. Returns `0` for a null address.

| Param     | Type    | Description                 |
| --------- | ------- | --------------------------- |
| `address` | integer | Absolute address.           |
| `size`    | integer | 1, 2, 4, or 8. Default `4`. |

## `write_int(address, value, size?)`

Writes the low `size` bytes (1, 2, 4, or 8; default 4) of `value` to `address`. Errors on null address or unsupported size.

| Param     | Type    | Description                 |
| --------- | ------- | --------------------------- |
| `address` | integer | Absolute address.           |
| `value`   | integer | Value to write.             |
| `size`    | integer | 1, 2, 4, or 8. Default `4`. |

## `read_float(address)` → number

Reads a 4-byte float from `address`. Returns `0.0` for null address.

## `write_float(address, value)`

Writes a 4-byte float to `address`.

| Param     | Type    | Description       |
| --------- | ------- | ----------------- |
| `address` | integer | Absolute address. |
| `value`   | number  | Float value.      |

## `write_bytes(address, hexstring)`

Writes an arbitrary byte sequence encoded as a hex string. Length is implied by the string length (must be even).

| Param       | Type    | Description                        |
| ----------- | ------- | ---------------------------------- |
| `address`   | integer | Absolute address.                  |
| `hexstring` | string  | e.g. `"9090C3"` for `NOP NOP RET`. |

```lua
-- Patch 6 bytes at an offset from eboot base
local a = get_app_base() + 0x12345
write_bytes(a, "909090909090")
```


---

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