GTIA adapter for ATARI 8bit is FPGA based epxansion for ATARI 8bit XE/XL. It is fitted between orginal GTIA chip and ATARI motherboard. Device handles new graphics modes and crystal clear RGB output in 2 modes: RGB 15khz (amiga/vbxe style) and VGA.
OSD (press and hold: "start + select +option" to enter osd settings)
config stored in spi eeprom
buzzer (extra feature)
dip switch (mode switch)
pcb green, 1mm
2k4 luts FPGA Gw1N
24bit DAC
FPGA firmware flasher with USB-C socket
80columns mode - please refer to FILES TAB
Example pictures:
FINAL PCB INSIDE 800XL (NOT REAL, just visualisation):
HARDWARE: Design/Production - Lotharek
Software /creaziest ideas - AcidMaker
INSTALLATION MANUAL: /in progress/
Prior to installation, please upgrade firmware to most present one.
Devices are sent with initial firmware
More details at FAQ tab above
Step by step:
FPGA updtated ? Yes- continue. NO - why?
GTIA SOLDERED? Desolder GTIA from ATARI PCB, solder back device and insert GTIA
GTIA SOCKETED? remove GTIA from socket, remove device`s bottom socket (very carefully), insert device into ATARI montherboard socket and put GTIA BACK (height limit)
Start ATARI as usually. Press few keys.. If You hear "beeps" from embedded speaker and ATARI works, You have succesfully made hardware installation
Choose Your target display:
31KHz (vga monitor) - both dip switches in UP position
15KHz (scart, retro RGB monitor) - xxxxxxx
31KHz (vga monitor) CONNECTION DIAGRAM:
SIGNAL
GTIA2RGB
(PIN 1 is marked with white sqaure on the pcb)
VGA (pins are always marked with numbers)
GND
PIN 1
at least one pin: 5,6,7,8,10 (all sugested, DO NOT CONNECT pin 9 !!!)
All You need is regular USB-C cable (good quality please!). GTIA2RGB has built in JTAG USB bridge programmer. Do not buy any external programmer! NOT NEEDED !
Download last firmware from FILES tab and save it to disk.
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