Build your dream computer

Anything relating to non Sinclair computers from the 1980's, 90's or even before.
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PeterJ
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Re: Build your dream computer

Post by PeterJ »

Joefish wrote:
Wed Sep 16, 2020 2:32 pm
Anyway, an ideal 8-bit machine?

Sinclair branding
Oric Atmos shape and colour
BBC Basic (and manufacturing quality)
ZX Spectrum 256x192 resolution, but with (a) 16-colour INK/PAPER attributes or (b) four-colour per-pixel, no attributes, or (c):
MSX character-mapped, multicolour character screen mode, and all with...
ZX Spectrum-style in-line video memory map
1/2 palette from the ZX Spectrum (8 BRIGHT colours), 1/2 palette hand-picked from C64 and Amstrad
C64-style hardware pixel scrolling
MSX mono hi-res sprites, but with more on each line like a C64
MSX twin, 2-button joystick ports
Atari paddle port support
C64 light-pen/gun support
MSX cartridge port
C64 sound
128K Spectrum memory paging (but able to page video RAM at 16384 too)
ZX Spectrum expansion port
Excellent! I would certainly buy one @Joefish! Although can I have an alternative to the Oric Atmos style case please?
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Joefish
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Re: Build your dream computer

Post by Joefish »

Nope, it's black and blood-orange, or nothing! We're not making N64s here you know.
Tell you what, you can have a range of JCB-Yellow, Grecian-Blue, Transparent-Red and Crystal-Green Quickshot 1 joysticks if you like. With matching colour plugs.
Last edited by Joefish on Wed Sep 16, 2020 3:16 pm, edited 1 time in total.
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akeley
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Re: Build your dream computer

Post by akeley »

Image


There truly is no accounting for taste ;)
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Joefish
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Re: Build your dream computer

Post by Joefish »

That thing is gorgeous.
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PeterJ
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Re: Build your dream computer

Post by PeterJ »

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Apologies if this doesn't make much sense to our non UK friends.
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Einar Saukas
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Re: Build your dream computer

Post by Einar Saukas »

akeley wrote:
Wed Sep 16, 2020 3:15 pm
Image


There truly is no accounting for taste ;)
It would look even "better" if they painted keys F and J as purple!
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TMD2003
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Re: Build your dream computer

Post by TMD2003 »

Here's a 64-colour palette I tried:

In short, it's six bits for INK or PAPER, with two bits left over for... something else that I haven't thought of. The two lowest bits are blue, the next two are red, the highest are green, the way it is on the Spectrum, rather than as it would be for RGB. A value of 1 corresponds to HTML 80, i.e. half intensity; 2 corresponds to HTML C0, which is BRIGHT 0 (on FUSE, at least), and 3 corresponds to HTML FF, which is BRIGHT 1. Hence, there are three levels of brightness for each of the standard seven colours, and plenty more in between...

Image

All it's really missing is brown of some description. Irish and Indian users will celebrate as they can now draw their flag without resorting to defining a UDG from the ZX81's ROM.
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Einar Saukas
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Re: Build your dream computer

Post by Einar Saukas »

TMD2003 wrote:
Wed Sep 16, 2020 7:51 pm
Here's a 64-colour palette I tried:
[...]
All it's really missing is brown
That's a contradition!
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akeley
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Re: Build your dream computer

Post by akeley »

TMD2003 wrote:
Wed Sep 16, 2020 7:51 pm
All it's really missing is brown
It's probably all over at the C64's house...

(Sorry. Will grab my coat now 8-) )
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catmeows
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Re: Build your dream computer

Post by catmeows »

CPU: 6809@1.75MHz
RAM: 48K ($0000 - $BFFF) + 16K extra page $0000 - $3FFF) for double buffering and few extra KBs
ROM: 2*16KB with mashup of BBC Micro and QL Super Basic

VIDEO: MODE1 Zx Spectrum 256x192 16+16 color attribute, MODE 2 128x192 with 16+16 color atribute and 2 global colors
- that would allow software 2 color sprites over static color background
no hardware acceleration, but with (maskable) raster interrupt on every line

with this palette:


SOUND: 3 * two 8-bit shift register, each pair forming a channel replaying 8 samples with 4-level resolution. 3rd channel with second mode of xor-shift register to produce noise. that allows square wave with various duty, triangle and saw wave and some other custom waves with rudimentary volume control.
with raster interrupt one could play samples up to 124kHz -> 50 frames, 312 lines, 8 samples in shift register or use more relaxed sample rate and feed shift register only every 2/4/8 lines
(well, that's the cheap solution, the expensive one would be SID)

OUTPUT/INPUT: TV, VIDEO CHROMA+LUMA (S-VIDEO), TAPE, 2xATARI 9PIN ports to connect basicaly anything, MASTER BUS for highend printer/floppy/net

CASE:
This keyboard layout
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in this case
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with this color scheme
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And it should have a sexy tape deck like this (except with standard connectors):
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Also it should have Zx Printer done right: https://en.wikipedia.org/wiki/BT100

Cheap plotter Image
Something like Atari Lab https://en.wikipedia.org/wiki/AtariLab (multimeter with probes)
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Some cheap NES-like gamepad that would undercut price of contemporary joysticks.

Its target audience would be gamers and geeks in age 6-99.
BASIC would have 32-bit integers and decimal floating point so it could do some serious math.
With quite good keyboard, one should be able to work on his homework or even run small business with floppy and printer attached.

And I would throw some good books on market:
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