RTC MODULE v0.3 for DIVIDE
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Partlist

1x  socket DIL28PZ
1x  socket DIL24PZ (optional)
2x  socket DIL20PZ (optional)
1x  socket DIL18PZ (optional)
IC1 - 8kB eeprom AT28C64B from DivIDE (or 32kB eeprom AT28C256)
IC2 - GAL22V10D (M_GAL from divide)
IC3 - RTC72421A (or RTC72421B)
IC4 - 74LS245 (used from divide)
IC5 - 74LS240
IC6 - GAL22V10D (new gal with firmware for RTC/JOY support)
D1,D2 - diode BAT42 (or SCHOTTKY)
C2 - capacitor 4.7uF
C1,C3 - capacitor 100nF (SMD1206)
RN1 - resistor net 7x4k7 (or 8x4k7)
R5,R6,R9,R10,R12 - Resistor 1K5 (SMD1206)
R7,R11,R13 - Resistor 470 Ohm (SMD1206)
R14 - Resistor 330 Ohm (SMD1206)
R8 - not used...
R1,R2,R3,R4 - Resistor 50 Ohm (SMD1206)
Battery socket for CR1620 (type KEYS502 in TME) + 1x battery CR1620
7x pinhead 2x1 pin (S1G20 + S1G20W in GME) + 7x jumpers
3x PRSL32 (GME)
1x horisontal joystick connector CANON9 ( https://www.gme.cz/konektor-xinya-can-9-v-p801-036 )
1x vertical joystick connector CANON9 ( https://www.gme.cz/konektor-xinya-can-9-v-p-p801-038 )
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For fix stability of RTC signal select you must connect one resistor 2k2 between pins 20 and 24 of GAL22V10D (rtc gal under eeprom chip)