SuperBASIC Memory Map - Revision history

Mcassera: /* Memory Map under BASIC */

2025-01-12T04:01:56Z

Memory Map under BASIC

← Older revision		Revision as of 00:01, 12 January 2025
Line 49:		Line 49:
	\|$07ea		\|$07ea
	\|$07ea		\|$07ea
	\|Y position of blinking cursor		\|Y position of blinking cursor (***does not adjust the actual cursor position)
	\|1		\|1
	\|-		\|-
	\|$07eb		\|$07eb
	\|$07eb		\|$07eb
	\|X position of blinking cursor		\|X position of blinking cursor (***does not adjust the actual cursor position)
	\|1		\|1
	\|-		\|-

Mcassera: /* Memory Map under BASIC */ Added memory $7ea to $7eb for cursor location

2025-01-12T03:56:25Z

Memory Map under BASIC: Added memory $7ea to $7eb for cursor location

@@ Line 45: / Line 45: @@
 |$0680
 |Pending key presses in Keyboard Buffer
 |1
 |-

Mcassera: /* Memory Map under BASIC */ Added Keyboard Buffer info @$678-$680

2024-09-22T22:29:03Z

Memory Map under BASIC: Added Keyboard Buffer info @$678-$680

@@ Line 36: / Line 36: @@
 |-
 | $0420|| $0814|| Memory Storage || 1012
 |-
 | $0814|| $0FFF|| Available Low Memory || 2027

201.137.92.72: /* Memory Map under BASIC */

2024-03-17T17:53:45Z

Memory Map under BASIC

@@ Line 25: / Line 25: @@
 | $00B0||$00EF|| Available Zero Page || 64
 |-
-| $00F0|| $00FF|| Kernel Arguments in Zero Page || 16
+| $00F0|| $00FF|| Kernel Arguments in Zero Page* || 16
 |-
 | $0100|| $01FF|| Hardware Stack of 6502 || 256
@@ Line 31: / Line 31: @@
 | $0200|| $0228|| Basic mini-Kernel memory || 40
 |-
-| $0229|| $03FF|| Available Low Memory | Also used by Sound Command in BASIC || 470
+| $0229|| $03FF|| Available Low Memory | Buffer area by Sound Command in BASIC (available if not using this command) || 470
 |-
 | $0400|| $041F|| Control Storage first 8 bytes control syntax highlighting || 32
@@ Line 70: / Line 70: @@
 |-
 | $14:0000|| $1F:FFFF|| Future Expansions? || 768kb
 |}

201.137.33.20: /* Memory Map under BASIC */

2024-01-28T20:25:33Z

Memory Map under BASIC

← Older revision		Revision as of 16:25, 28 January 2024
Line 57:		Line 57:
	\| $02:2C00\|\| $02:7FFF\|\| Available High Memory \|\| 21kb		\| $02:2C00\|\| $02:7FFF\|\| Available High Memory \|\| 21kb
	\|-		\|-
	\| $02:8000\|\| $02:F000\|\| Available High Memory \| Used for BASIC Cross Development w/PC or MAC\|\| 32k		\| $02:8000\|\| $02:F000\|\| Available High Memory \| Used for BASIC Cross Development w/PC or MAC (or Available High Memory)\|\| 32k
	\|-		\|-
	\| $03:0000\|\| $03:7FFF\|\| Used for Sprite Data in BASIC \|\| 32kb		\| $03:0000\|\| $03:7FFF\|\| Used for Sprite Data in BASIC \|\| 32kb

97.113.38.170: Memory map, moved from Getting Started.

2024-01-14T20:47:46Z

Memory map, moved from Getting Started.

New page

=== Memory Map under BASIC ===
{| class="wikitable sortable"
|+ Caption text
|-
! Initial Address !! End Address !! Description !! Bytes
|-
| $0000|| -|| MMU Control Register || 1
|-
| $0001|| -|| I/O Control Register || 1
|-
| $0002|| $0007|| Free Zero Page Addresses || 6
|-
| $0008|| $000F|| MMU Control Addresses || 8
|-
| $0010|| $002F|| Free Zero Page Addresses || 32
|-
| $0030|| $003F|| Used Zero Page Addresses for (xx),Y Addressing || 16
|-
| $0040|| $0041 || Current Address on screen of start of line || 2
|-
| $0042|| $004F|| Avaliable Zero Page Addresses || 14
|-
| $0050|| $00AF|| Number / Floating Point Stack for 16 numbers || 96
|-
| $00B0||$00EF|| Available Zero Page || 64
|-
| $00F0|| $00FF|| Kernel Arguments in Zero Page || 16
|-
| $0100|| $01FF|| Hardware Stack of 6502 || 256
|-
| $0200|| $0228|| Basic mini-Kernel memory || 40
|-
| $0229|| $03FF|| Available Low Memory | Also used by Sound Command in BASIC || 470
|-
| $0400|| $041F|| Control Storage first 8 bytes control syntax highlighting || 32
|-
| $0420|| $0814|| Memory Storage || 1012
|-
| $0814|| $0FFF|| Available Low Memory || 2027
|-
| $1000|| $1FFF|| SuperBASIC Identifier Tables, allocated memory, string vars, stack || 4kb
|-
| $2000|| $77FF|| SuperBASIC Program Tokenized Code (grows Upward) || 22kb
|-
| $7800|| $7FFF|| Top 2k of SuperBASIC Program tokenize code or used for ML routines in low memory || 2kb
|-
| $8000|| $BFFF|| SUPERBASIC CODE || 16kb
|-
| $C000|| $DFFF|| I/O Memory Pages / Underlying Kernel Code (Selectable with I/O control Register)|| 8kb
|-
| $E000|| $FFEF|| KERNEL CODE || 8176
|-
| $FFF0|| $FFFF|| Reset Vectors and NMI / IRQ / BRK Vectors || 16
|-
| $01:0000|| $02:2BFF|| Default Memory used by BASIC bitmap graphics || 75kb
|-
| $02:2C00|| $02:7FFF|| Available High Memory || 21kb
|-
| $02:8000|| $02:F000|| Available High Memory | Used for BASIC Cross Development w/PC or MAC|| 32k
|-
| $03:0000|| $03:7FFF|| Used for Sprite Data in BASIC || 32kb
|-
| $03:8000|| $03:FFFF|| Available High Memory | Unless not running from Flash, Used for ROM Images|| 32k
|-
| $04:0000|| $07:DFFF|| Available High Memory || 248kb
|-
| $07:E000|| $07:FFFF|| Available High Memory | Being considered to be Reserved for Environmental Variables || 8Kb
|-
| $10:0000|| $13:FFFF|| Cartridge Expanded Memory (addresable only by CPU) || 256kb
|-
| $14:0000|| $1F:FFFF|| Future Expansions? || 768kb
|}