More content added

01_hardware/ecs_a600_a3000/chip_ram_expansion.md

@@ -35,9 +35,9 @@ ULONG chip_free  = AvailMem(MEMF_CHIP);
 ULONG chip_total = AvailMem(MEMF_CHIP | MEMF_TOTAL);
 ```
 
-The exec memory list is built at boot time from the chip RAM size detected by the ROM initialisation code, which queries Agnus's internal address counter.
+The exec memory list is built at boot time from the chip RAM size detected by the ROM initialization code, which queries Agnus's internal address counter.
 
-## AmigaOS ROM Initialisation (Exec init)
+## AmigaOS ROM Initialization (Exec init)
 
 During cold boot, the Kickstart ROM probes Chip RAM size:
 
@@ -45,7 +45,7 @@ During cold boot, the Kickstart ROM probes Chip RAM size:
 2. Read back — if the value matches, 2 MB Chip RAM is present
 3. The exec `MemHeader` for Chip RAM is extended to $1FFFFF
 
-This is performed in the `RomBoot()` → `InitCode()` sequence before the exec memory system is fully initialised.
+This is performed in the `RomBoot()` → `InitCode()` sequence before the exec memory system is fully initialized.
 
 ## Implications for Programming
 

01_hardware/ecs_a600_a3000/chipset_ecs.md

@@ -48,10 +48,10 @@ lsr.w   #8, d0              ; shift to get Agnus ID in low byte
 
 ECS Denise adds to OCS Denise (8362):
 
-1. **BPLCON3** — new control register for border colour, sprite bank
+1. **BPLCON3** — new control register for border color, sprite bank
 2. **Sub-pixel scrolling** — additional scroll control bits
 3. **Genlock extensions** — improved external sync handling
-4. **Border blank** — BPLCON3 can blank the border area to colour 0
+4. **Border blank** — BPLCON3 can blank the border area to color 0
 
 ### DENISEID — Revision Register
 
@@ -74,10 +74,10 @@ move.w  $DFF07C, d0   ; read DENISEID
 New register at `$DFF106` (ECS only, must not be written on OCS):
 
 ```
-bit 15-13: BANK2-0    — sprite colour bank (AGA: upper 4 bits of colour reg)
-bit 12-10: PF2OF2-0   — playfield 2 colour offset (for dual playfield)
-bit  9:    LOCT       — low colour enable (AGA HAM8 mode)
-bit  6:    BRDRBLNK   — border blank: forces border area to colour 0
+bit 15-13: BANK2-0    — sprite color bank (AGA: upper 4 bits of color reg)
+bit 12-10: PF2OF2-0   — playfield 2 color offset (for dual playfield)
+bit  9:    LOCT       — low color enable (AGA HAM8 mode)
+bit  6:    BRDRBLNK   — border blank: forces border area to color 0
 bit  5:    BRDNTRAN   — border not-transparent (disable border transparency)
 bit  4:    ZDCLKEN     — horizontal/vertical count display
 bit  3:    BRDSPRT    — sprites in border area enable

01_hardware/ecs_a600_a3000/ecs_registers_delta.md

@@ -15,7 +15,7 @@ bit 15: HARDDIS  — disable hard limits on display window
 bit 14: LPENDIS  — disable light pen latch
 bit 13: VARVBEN  — enable variable VBlank
 bit 12: LOLDIS   — disable long line sync
-bit 11: CSCBEN   — composite sync on colour burst
+bit 11: CSCBEN   — composite sync on color burst
 bit 10: VARVSYEN — variable vertical sync
 bit  9: VARHSYEN — variable horizontal sync
 bit  8: VARBEAMEN— variable beam enable
@@ -29,7 +29,7 @@ bit  1: HSYTRUE  — horizontal sync polarity
 bit  0: MONCSYEN — monochrome composite sync enable
 ```
 
-**Default OCS behaviour** is replicated by writing $0000 to BEAMCON0 on ECS.
+**Default OCS behavior** is replicated by writing $0000 to BEAMCON0 on ECS.
 
 **PAL/NTSC software switch:**
 ```asm

01_hardware/ecs_a600_a3000/gary_system_controller.md

@@ -12,7 +12,7 @@
 - **SCSI interface glue**: Works with the A3000's built-in WD33C93 SCSI controller
 - **ROM decode**: Maps Kickstart ROM into the address space
 
-Gary is not directly programmable by user software; its configuration is set by hardware strapping and the ROM initialisation sequence.
+Gary is not directly programmable by user software; its configuration is set by hardware strapping and the ROM initialization sequence.
 
 ## Bus Arbitration
 
@@ -53,7 +53,7 @@ The A4000 does **not** use Gary — it uses a different system controller chip c
 
 - Commodore A3000 Technical Reference Manual
 - ADCD 2.1 — Hardware Manual, A3000 chapter
-- NDK39: hardware headers (community-documented Gary behaviour)
+- NDK39: hardware headers (community-documented Gary behavior)
 
 ## See Also