Upper ROM Bank Number - Revision history

Phi2x: /* Other Bank Numbers */

2025-04-03T20:02:41Z

‎Other Bank Numbers

Phi2x: /* Other Bank Numbers */

2025-04-03T20:01:49Z

‎Other Bank Numbers

Phi2x: /* Other Bank Numbers */

2025-04-03T19:57:42Z

‎Other Bank Numbers

Phi2x: /* Warning for ROM boards */

2025-03-22T11:22:51Z

‎Warning for ROM boards

Phi2x: /* ASIC ROM numbering system */

2025-03-22T10:58:26Z

‎ASIC ROM numbering system

Phi2x: /* Warning for ROM boards */

2025-03-22T10:48:33Z

‎Warning for ROM boards

Phi2x: /* ASIC ROM numbering system */

2025-03-22T10:22:16Z

‎ASIC ROM numbering system

Phi2x: /* Common ROM Bank Numbers */

2025-03-22T03:22:44Z

‎Common ROM Bank Numbers

Phi2x: /* ASIC ROM numbering system */

2025-03-22T02:38:01Z

‎ASIC ROM numbering system

Phi2x: /* ASIC ROM numbering system */

2025-03-22T02:18:58Z

‎ASIC ROM numbering system

Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /mnt/cpcwiki-httpdocs/includes/diff/DairikiDiff.php on line 434

@@ Line 30: / Line 30: @@
 == Other Bank Numbers ==
-* [[Utopia]] should always be in an upper slot than [[UniDOS]]. Utopia in lower slot than UniDOS will disable some UniDOS RSX. [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/m4-unidos-and-cpcatx4/msg249541/#msg249541 Source]
+* [[Utopia]] should always be in an upper slot than [[UniDOS]]. Utopia in lower slot than UniDOS will disable some UniDOS [[RSX]]. [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/m4-unidos-and-cpcatx4/msg249541/#msg249541 Source]
 * [[ROM List]] listing of known ROM-based software

@@ Line 30: / Line 30: @@
 == Other Bank Numbers ==
-* Utopia should always be in an upper slot than UniDOS. Utopia in lower slot than UniDOS will disable some UniDOS RSX. [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/m4-unidos-and-cpcatx4/msg249541/#msg249541 Source]
+* [[Utopia]] should always be in an upper slot than [[UniDOS]]. Utopia in lower slot than UniDOS will disable some UniDOS RSX. [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/m4-unidos-and-cpcatx4/msg249541/#msg249541 Source]
 * [[ROM List]] listing of known ROM-based software

← Older revision		Revision as of 19:57, 3 April 2025
Line 29:		Line 29:

	== Other Bank Numbers ==		== Other Bank Numbers ==
		+
		+	* Utopia should always be in an upper slot than UniDOS. Utopia in lower slot than UniDOS will disable some UniDOS RSX. [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/m4-unidos-and-cpcatx4/msg249541/#msg249541 Source]
		+	* [[ROM List]] listing of known ROM-based software
		+

	* You may want to add a list of devices with ROM here, please also include their fixed bank number(s), or selectable range of bank number(s))		* You may want to add a list of devices with ROM here, please also include their fixed bank number(s), or selectable range of bank number(s))

@@ Line 83: / Line 83: @@
 ROM 0 can always be overloaded, but remember that you will not boot to the BASIC in that case ([[Hackit|the Hacker ROM]] is a popular replacement ROM 0, for example).
 <br>
 [[Category:Programming]][[Category:Memory expansions]][[Category:Peripherals]][[Category:CPC Internal Components]]

← Older revision		Revision as of 10:58, 22 March 2025
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	And on 6128+ only, physical ROM 3 is mapped to logical ROM 7. The ASIC is configured not to map it on 464+ and GX4000, even if a 6128+ cartridge is inserted.		And on 6128+ only, physical ROM 3 is mapped to logical ROM 7. The ASIC is configured not to map it on 464+ and GX4000, even if a 6128+ cartridge is inserted.
−
−	~~Logical ROMs can be replaced by using a [[ROM board]] while physical ROMs cannot be replaced.~~

	<br>		<br>

@@ Line 80: / Line 80: @@
 == Warning for ROM boards ==
-On CPC 6128 and DDI-1, the internal ROM 7 can't be cleanly disabled (it works on some machines, but it means the internal ROM and the flash chip both use the memory bus at the same time, and it happens that the flash chip is stronger in this fight. But it could eventually damage the hardware).
+On CPC 6128 and DDI-1, the internal ROM 7 can't be cleanly disabled (it works on some machines, but it means the internal ROM and the flash chip both use the memory bus at the same time, and it happens that the flash chip is stronger in this fight. But it could eventually damage the hardware). [https://pulkomandy.github.io/shinra.github.io/gordon.html Source]
-On Plus and machines without disk drives, you can enable it.
+On Plus and machines without disk drives, the internal ROM 7 can safely be disabled.
-ROM 0 can always be overloaded, but remember that you will not boot to the BASIC in that case ([[Hackit|the Hacker ROM]] is a popular replacement ROM 0, for example). [https://pulkomandy.github.io/shinra.github.io/gordon.html Source]
+ROM 0 can always be overloaded, but remember that you will not boot to the BASIC in that case ([[Hackit|the Hacker ROM]] is a popular replacement ROM 0, for example).
 <br>
 [[Category:Programming]][[Category:Memory expansions]][[Category:Peripherals]][[Category:CPC Internal Components]]

@@ Line 75: / Line 75: @@
 * The first 8 physical roms can be accessed as lower roms. And all the 32 physical roms can be accessed as upper roms. A physical rom can even be mounted both as lower rom and upper rom at the same time.
 * ROM boards are seen as logical roms. They can be accessed only as upper roms and there can be up to 128 logical roms.
 [[Category:Programming]][[Category:Memory expansions]][[Category:Peripherals]][[Category:CPC Internal Components]]

@@ Line 17: / Line 17: @@
 == Common ROM Bank Numbers ==
-h       BASIC (or AMSDOS, depending on LK1 on the DDI-1 board. On CPC, if AMSDOS sees itself mapped to bank 0, then it does automatically load & start the boot sector from drive A after power-up. On Plus, there is a bug in the System cartridge that will cause the machine to crash instead.)
+h       BASIC (or AMSDOS, depending on LK1 on the DDI-1 board. On CPC, if AMSDOS sees itself mapped to bank 0, then it does automatically load & start the boot sector from drive A after power-up. On Plus, there is [[LK Links|a bug in the System cartridge]] that will cause the machine to crash instead.)
 h       AMSDOS (or BASIC, depending on LK1 on the DDI-1 board)
 h..07h  Bootable ROMs on CPC 464/664/6128 (KL_ROM_WALK)

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 *ROM 7: Burnin' Rubber ROM 3
-By default, just like on Amstrad CPC, if there are no peripherals issuing ROMDIS=HIGH, then BASIC is mapped to all logical ROM banks (in range of 00h..7Fh).
+By default, just like on Amstrad CPC, if there are no peripherals issuing ROMDIS=HIGH, then BASIC (or more precisely: Physical ROM 1) is mapped to all logical ROM banks (in range of 00h..7Fh).
 And on 6128+ only, physical ROM 3 is mapped to logical ROM 7. The ASIC is configured not to map it on 464+ and GX4000, even if a 6128+ cartridge is inserted.