Bad EDID generated

[mittorn]

Searching for runaway unicorns in '/dev/stdin'
-- Found naughty unicorn: Modeline "1088x816_83.00" 103.50 1088 1160 1272 1456 816 819 823 859 -hsync +vsync
Wrote 1088x816_83.00.S

EDID version: 1.3
Manufacturer: HKL Model 0 Serial Number 0
Made in week 12 of 2017
Digital display
Maximum image size: 28 cm x 21 cm
Gamma: 2.20
DPMS levels: Standby Suspend Off
RGB color display
First detailed timing is preferred timing
Display x,y Chromaticity:
  Red:   0.6416, 0.3486
  Green: 0.2919, 0.5957
  Blue:  0.1474, 0.1250
  White: 0.3125, 0.3281
Established timings supported:
Standard timings supported:
  1088x816@60Hz 4:3
Detailed mode: Clock 103.500 MHz, 283 mm x 212 mm
               1088 1160 1272 1456 hborder 0
                816  819  823  859 vborder 0
               +hsync +vsync
               VertFreq: 82 Hz, HorFreq: 71085 Hz
Serial number: Linux #0
Monitor ranges (GTF): 59-61Hz V, 70-72kHz H, max dotclock 110MHz
Monitor name: 1088x816_83.0
Has 48 extension blocks
Checksum: 0xa (should be 0x63)

cat 1088x816_83.00.bin > /home/mittorn/debug/dri/0/VGA-1/edid_override
cat: write error: Invalid argument

/* 1088x816_83.00: Modeline "1088x816_83.00" 103.50 1088 1160 1272 1456 816 819 823 859 -hsync +vsync */
#define HSYNC_POL 1
#define VSYNC_POL 1
#define YPULSE (63+4)
#define XPULSE 112
#define YPIX 816
#define XPIX 1088
#define VFREQ 60
#define DPI 96
#define CLOCK 103500
#define VERSION 1
#define REVISION 3
#define XOFFSET 72
#define YOFFSET (63+3)
#define XY_RATIO XY_RATIO_16_9
#define YBLANK 43
#define XBLANK 368
#define TIMING_NAME "1088x816_83.00"
#include "edid.S"