Added VERA font

.gitignore

@@ -0,0 +1,3 @@
+.vscode/**
+*.bin
+*.o

Makefile

@@ -24,7 +24,8 @@ clean:
 		-name '*.lst' \
 	\) -delete
 	@find src -type f \( \
-		-name '*.o' \
+		-name '*.o' -o \
+		-name '*.bin' \
 	\) -delete
 
 .PHONY: flash

bin/makechrom

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+
+import sys, traceback
+from PIL import Image
+
+flip_d = False
+
+if len(sys.argv)<2:
+	print('ERROR: Please specify at least one file to convert!')
+	print('Note: character size is calculated based on resolution assuming 16x16 grid.\n')
+
+for i in range(len(sys.argv)-1):
+	if sys.argv[i+1][:1]!='-':
+		continue
+	if sys.argv[i+1]=='-f':
+		flip_d = True
+
+for i in range(len(sys.argv)-1):
+	if sys.argv[i+1][:1]=='-':
+		continue
+	try:
+		print(f'Processing "{sys.argv[i+1]}"...')
+		img = Image.open(sys.argv[i+1])
+		width, height = img.size
+		cw = width>>4
+		ch = height>>4
+		print(f'({width},{height}) => char({cw},{ch})')
+		pixels = img.load()
+		f = open(f'{sys.argv[i+1]}.bin','wb')
+		ba = bytearray()
+		for y in range(16):
+			for x in range(16):
+				for py in range(ch):
+					outbyte = 0
+					for px in range(cw):
+						if flip_d:
+							outbyte = outbyte << 1
+						if pixels[(x*cw)+px,(y*ch)+py]>0:
+							if flip_d:
+								outbyte = outbyte | 1
+							else:
+								outbyte = outbyte | (1<<(px&7))
+						if (px&7)==7:
+							ba.append(outbyte)
+							outbyte=0
+		f.write(ba)
+		f.close()
+		
+	except Exception as e:
+		print(f'Exception caught!\n"{traceback.format_exc()}"')
+
+print('Task completed.\n')

config/config.mk

@@ -15,7 +15,8 @@ CFLAGS := -I include \
 		  --strong-inline \
 		  --force-switch jump-table
 
-ASFLAGS := -I include \
+ASFLAGS := -I . \
+		   -I include \
 		   --code-model=large \
 		   --data-model=huge
 
@@ -61,3 +62,11 @@ endif
 %.o: %.s
 	@echo "Assembling $@..."
 	@$(AS) $(ASFLAGS) -o $@ $<
+	
+.SUFFIXES: .png .bin .ase
+%.png: %.ase
+	aseprite -b $< -save-as $@
+
+%.bin: %.png
+	bin/makechrom -f $<
+	mv $<.bin $@

config/kernel.mk

@@ -3,18 +3,26 @@ KERNEL_ASM_SRC := $(wildcard src/kernel/*.s) \
 				  $(wildcard src/kernel/*/*/*.s) \
 				  $(wildcard src/kernel/*/*/*/*.s) \
 				  $(wildcard src/kernel/*/*/*/*.s)
+
 KERNEL_C_SRC :=	$(wildcard src/kernel/*.c) \
 				$(wildcard src/kernel/*/*.c) \
 				$(wildcard src/kernel/*/*/*.c) \
 				$(wildcard src/kernel/*/*/*/*.c) \
 				$(wildcard src/kernel/*/*/*/*/*.c)
 				
+FONT_SOURCES := $(wildcard src/kernel/hardware/vera/vera_font_*.ase)
+
 KERNEL_OBJ := $(KERNEL_ASM_SRC:.s=.o) 
 KERNEL_OBJ += $(KERNEL_C_SRC:.c=.o)
 
+FONTS := $(FONT_SOURCES:.ase=.bin)
+
 KERNEL_LDFLAGS := --list-file build/kernel.lst
 
 build/kernel.bin: $(KERNEL_OBJ)
 	echo "Linking $@..."
+	echo "$(FONTS)"
 	$(LD) -o $@ config/kernel.scm $(LDFLAGS) $(KERNEL_LDFLAGS) $^
 	mv build/kernel.raw $@
+
+src/kernel/hardware/vera/vera_font.o: $(FONTS)

config/kernel.scm

@@ -23,11 +23,9 @@
                 (section (low_rom #xC08000))
                 (section code)
                 (section farcode)
-                (section cdata)
                 (section switch)
                 (section near)
-                (section data)
+                (section cfar)
-                (section chuge)
                 (section ihuge)
                 (section data_init_table)
         )

include/macros.h

@@ -1,5 +1,3 @@
-// SPDX-License-Identifier: MIT
-//
 // include/macros.h
 //      Utility macros for Calypsi compiler and assembler
 

src/kernel/cstartup.s

@@ -1,9 +1,5 @@
-; SPDX-License-Identifier: MIT
-;
 ; src/kernel/cstartup.s
 ;      Critical boot and init code before calling main()
-;
-; Copyright © 2024 Kyle J Cardoza <Kyle.Cardoza@icloud.com>
 
 ;;; Startup variant, change attribute value if you make your own
 	.rtmodel cstartup,"sentinel65x"

src/kernel/hardware/vera/vera_font.s

@@ -0,0 +1,10 @@
+; SPDX-License-Identifier: MIT
+;
+; src/kernel/vera_font.s
+;      Assembly file to load the VERA font into the ROM image
+;
+; Copyright © 2024 Kyle J Cardoza <Kyle.Cardoza@icloud.com>
+
+	.section cfar,rodata
+vera_font_0:
+	.incbin "vera_font_0.bin"