bcdfo — Portraits & UI

bcdfo — Portraits & UI

bcdfo (63,010 bytes) holds the character portraits and the UI elements for the game’s screens. It’s fully accounted for — 0 remainder.

What’s inside

• 36 character portraits — 32×24×6bpp, sequential planar, at offset $60. (An earlier pass miscounted these as 109; tiles 36–108 are actually the LAB_010D UI descriptor region, misread at the wrong stride.)
• 23 seven-plane masked UI elements, located via the LAB_010D descriptor table in bcdfp.
• Three 8×8 fonts at 0x9E28 / 0xA148 / 0xA320.
• The mouse-pointer sprite bank at 0xA028 (byte-identical to bcdfa’s).

The descriptor table

The LAB_010D descriptor table in bcdfp drives the UI elements. Each 28-byte entry describes one element:

Offset	Size	Field
+0	2	pointer-table index (base address)
+2	4	source data offset
+6	4	stride per bitplane
+10	4	alternate source offset (if flag bit 1)
+14	2	BLTSIZE = (h<<6)|w/8
+16	2	screen modulo
+18	2	X position
+20	2	Y position
+22	2	flags (bit 0 = clipped path, bit 1 = alternate addr)
+24	2	width
+26	2	height

The +10 field is an explicit mask pointer, and flag bit 1 selects mask-first vs mask-elsewhere storage — so all 23 elements are 7-plane masked sprites. Reading the descriptor table’s source offset and w/h only (as two earlier passes did) is what caused the miscounts.

Extraction

scripts/render_all.py → public/assets/blackcrypt/amiga/sprites/portraits.*, sprites/ui.*, sprites/chargen-font-*.png.