VidiTex VT720E tear down of a decent NES clone from 1991 @CallousCoder

Uploaded June 2023 | Updated September 2026, 9 hours ago

Today we have a look at the VidiTex VT720E from 1991 which is an NES/FAMICOM clone from 1991, with discrete logic! And surprisingly good joystick and case.

VidiTex VT720E tear down of a decent NES clone from 1991

$SHADERS for absolute N00BS in Godot Today we will start you off with a 2D fragment #shader in #GODOT by writing very simple pixelate and chromatic aberration shader. If you cant follow this, you may need to go back to high school and learn more #maths Code: shader_type canvas_item; uniform float pixel = 0.008; vec4 pixelate(sampler2D t, vec2 uv, float p_fact){ uv += -1.*mod(uv, p_fact).xy; vec4 color = texture(t, uv); return color; } void fragment() { vec2 uv = FRAGCOORD.xy / (1.0 / SCREEN_PIXEL_SIZE); vec4 color = pixelate(TEXTURE, uv, pixel); //chormatic ab float ab_r = texture(TEXTURE, vec2(uv.x-sin(TIME*2.)*0.05, uv.y)).r; float ab_b = texture(TEXTURE, vec2(uv.x+sin(TIME*5.)*0.05, uv.y)).b; //eliptical mask vec2 trans = 2.0 * uv - 1.0; float mask = smoothstep(1.0, 0.1, dot(trans, trans)); color.r = mix(ab_r, color.r, mask); color.b = mix(ab_b, color.b, mask); COLOR = color; }$

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VidiTex VT720E tear down of a decent NES clone from 1991