From bdcc0ab379ae259f37fd02bd3968ada6c06a0be4 Mon Sep 17 00:00:00 2001 From: Arthur Paulino Date: Fri, 5 Jan 2018 17:48:06 -0300 Subject: [PATCH] moving RAM documentation --- CPU.md | 18 ------------------ 1 file changed, 18 deletions(-) diff --git a/CPU.md b/CPU.md index 82cf071..1b780b8 100644 --- a/CPU.md +++ b/CPU.md @@ -10,24 +10,6 @@ _See also_: [Battery Hardware](https://github.com/simon987/Much-Assembly-Require Work in progress - -## Random-access memory - -From a storage point of view, the CPU memory spaces are organized as identical arrays of 16-bit words. The CPU has access to its full address space: 65536 (0x10000) words of memory (total 128KB). By default, the stack base is at address 0xFFFF and grows towards lower addresses. - -The memory represented in a table would look like this: - -| Address | Description | -| ------- | ----------- | -| `0x0000 - 0x004F` | Memory used by the [LiDAR](https://github.com/simon987/Much-Assembly-Required/wiki/Hardware:-LiDAR#interrupt-behavior) `GET_PATH` hardware interrupt behavior | -| `0x0050` | The execution cost. Is set at the end of the tick. [source](https://github.com/simon987/Much-Assembly-Required/blob/master/Server/src/main/java/net/simon987/server/assembly/CPU.java) | -| `0x0051:0x0052` | The number of instructions executed. Is set at the end of the tick. [source](https://github.com/simon987/Much-Assembly-Required/blob/master/Server/src/main/java/net/simon987/server/assembly/CPU.java) | -| `0x0053 - 0x00FF` | Not used, but probably not smart to use since it might be reserved for future use cases | -| `0x0100 - 0x01FF` | Memory used by the [LiDAR](https://github.com/simon987/Much-Assembly-Required/wiki/Hardware:-LiDAR#interrupt-behavior) `GET_MAP` hardware interrupt behavior | -| `0x0200 - 0x0200 + PROGRAM_SIZE` | The instructions that make up your program | -| `...`| Not assigned to anything | -| `0x.... - 0xFFFF` | The start of your stack, pointed to by the BP Register at the start of your program. This grows towards `0x0000` | - ## General purpose registers The registers are 16-bits locations available to the CPU and are used in some instructions and system calls. Read [Basic Assembly Tutorial](https://github.com/simon987/Much-Assembly-Required/wiki/Basic-Assembly-tutorial) for more information.