references.txt

references  :

0)   https://www.youtube.com/watch?v=QUfdASs82Lw
0)   https://www.youtube.com/watch?v=Z0ZsKGKIgbU
0)   https://www.youtube.com/watch?v=kfFewq0yAHE
1)   https://www.youtube.com/watch?v=rbaAmnhZAis
2)   https://www.youtube.com/watch?v=_2uXqTi42LI
3)   https://www.youtube.com/watch?v=6vbI-r5aXJI
4)   https://www.youtube.com/watch?v=TfhmOfD-tXA
5)   https://www.youtube.com/watch?v=lO_9Zz5jzAA
6)   https://www.youtube.com/watch?v=RmHNxG9Xvew
7)   https://www.youtube.com/watch?v=wJO-DUDy330

1)   https://gigatron.io/


CPU :

1)   8 bit RISC architecture.
2)   CPU frequency 6.25 MHz.
3)   CPU constructed from 7400 series.
4)   8 instructions code  :

	0.LD
	1.ANDA
	2.ORA
	3.XORA
	4.ADDA
	5.SUBA
	6.ST
	7.J/Bcc

Memory :

1)   32KByte SRAM
2)   64KWord EEPROM  (word 16 bits)

Software :

1)   Virtual CPU layer.
1)   Virtual CPU frequency equivalent to 1 MHz.
2)   34 instruction for Virtual CPU (similar to SWEET16 lagage).
3)   GCL (Gigatron Control Langage).
4)   User software.

Inputs :

1)   Game controlleur.
2)   Programmer mode (same port as the game controller).

Outputs :

1)   VGA.
2)   4 bits sounds (from the accumulator).
3)   4 bits software channels (from the accumulator).
4)   4 blinking LEDs.


[Fr/En] Analyse du Gigatron TTL Computer, le comprendre et le simuler si possible.