gistfile1.txt

#!/usr/bin/env python3
#
# Deinterleave BSB font ROM from Maskromtool output
#

import os, sys

def die(x):
    print(x)
    sys.exit(1)

with open("bits.txt", "rt") as f:
    lines = f.readlines()

ncols = None
nrows = 0
barr = bytearray()

# number of pixels horizontally
xpixels = 8
# number of lanes per bank (128 characters / 16 xinterleave = 8)
yinterleave = 8

for yo in range(8):
    for xo in reversed(range(16)):
        nrows += 1
        for line in [lines[i].strip() for i in range(yo, len(lines), yinterleave)]:
            if ncols is None:
                ncols = len(line)
                xinterleave = ncols // xpixels
                if ncols % xpixels != 0:
                    die(f"Line length {ncols} is not a multiple of {xpixels} bits")
                print(f"{ncols} bits per row, {xinterleave} addr-lsbs per interleaved lane")
            else:
                if ncols != len(line):
                    die(f"Line length inconsistent on line {nrows}")

            bstr = line[xo:len(line):xinterleave]
            bstr = bstr[::-1]
            print(bstr.replace('0',' ').replace('1','X'))
            barr.append(int(bstr, 2))
        print()

print(f"Processed {nrows} characters")

with open("rom.data", "wb") as f:
    f.write(barr)

Reference character set.