VOGONS


First post, by keenerb

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https://github.com/hkzlab/ES1868_ISA8

Seems like a neat project; does it work well? I know ESS1868 clones go for ~$20 USD on ebay, but I really enjoy using parts I put together myself.

Reply 1 of 17, by dionb

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No, but looks good and he has some other very nice stuff too. I think I would even prefer his ES688 as it's non-PnP, which makes a lot more sense IMHO for 8b ISA:
https://github.com/hkzlab/ES688_ISA8

Almost tempted to start ordering some PCBs - it's been too long 😉

Reply 3 of 17, by keenerb

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I am compiling a parts list right now, if you'd like to help I'll send you an invite to the google spreadsheet and we can embark on this journey of discovery together. I've got es1868f chips coming this week.

Reply 4 of 17, by 84TAVeRT

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I am wanting all my custom built boards to be purple.

I think the es1868f is the one to build. the board is smaller and the number of components doesn't look too daunting.

I don't know if I will be much help with the identification of the components, but I will be interested in the finished BOM

Thanks,
Chris

Reply 6 of 17, by keenerb

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dionb wrote on 2022-06-20, 23:36:

No, but looks good and he has some other very nice stuff too. I think I would even prefer his ES688 as it's non-PnP, which makes a lot more sense IMHO for 8b ISA:
https://github.com/hkzlab/ES688_ISA8

Almost tempted to start ordering some PCBs - it's been too long 😉

The 1868f on 16-bit ISA cards works great with the unisound driver, I'm pursuing that project myself. I was told the ess688 doesn't have a hardware MPU so that is less that ideal for my purposes also.

Reply 9 of 17, by keenerb

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84TAVeRT wrote on 2022-06-26, 04:33:

https://www.mouser.com/ProjectManager/Project … ssID=5b7c15b47a

i do not have the io plate, or jacks on this list

Thanks a bunch. I have PCBs and ES1868Fs coming just as soon as china allows it...

Reply 11 of 17, by keenerb

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84TAVeRT wrote on 2022-07-12, 18:55:

I think there are some small surface mount components on the back of the card. I was unable to identify those.

on a side note, i found my original sbpro 2.0 in a drawer the other day 😁

I received my boards from jlcpcb yesterday, they look like pullup/down resistors to me. On another ES1868F board I have, there are several 473 SMD resistors performing what appears to be approximately the same function.

Reply 12 of 17, by keenerb

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https://raw.githubusercontent.com/hkzlab/ES18 … S1868.kicad_pcb

```
(module Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder (layer B.Cu) (tedit 5F68FEF0) (tstamp 60E998D6)
(at 304.165 150.241 90)
(descr "Inductor SMD 0805 (2012 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size source: https://docs.google.com/spreadsheets/d/1BsfQQ … dit?usp=sharing), generated with kicad-footprint-generator")
(tags "inductor handsolder")
(path /611FBE25)
(attr smd)
(fp_text reference L5 (at 2.54 0 180) (layer B.SilkS)
(effects (font (size 1 1) (thickness 0.15)) (justify mirror))
)
```

Text reference L5 (one of the pads) says it's an Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder maybe?

Reply 13 of 17, by zwrr

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I am making ES1868 clones following this project.

I have a question.

The two resistors, R28 and R29, are marked as 2.7 on the drawing.

Should it be 2.7Ω or 2.7KΩ?

Cyrix 486DLC-40, 386-VC-H, 16MB, GD5422, ES1868F


Intel 486DX4-100EW, VI15G, 16MB, WD90C33, ES1868F


AMD5x86-133, HIPPO-15, 32MB, S3 Vison 964, ES1868F


K6-3+ 500, T2P4, 128MB, Millennium II, Voodoo 2 12MB, SoundBlaster AWE32


Reply 15 of 17, by zwrr

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Thermalwrong wrote on 2023-04-08, 01:48:

From the resistor band colours it looks like 2.7 ohms

Thanks, I've got the PCB made to order and am about to try and build this card, have no prior knowledge of circuit design, it's a challenge.

Cyrix 486DLC-40, 386-VC-H, 16MB, GD5422, ES1868F


Intel 486DX4-100EW, VI15G, 16MB, WD90C33, ES1868F


AMD5x86-133, HIPPO-15, 32MB, S3 Vison 964, ES1868F


K6-3+ 500, T2P4, 128MB, Millennium II, Voodoo 2 12MB, SoundBlaster AWE32


Reply 16 of 17, by Thermalwrong

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zwrr wrote on 2023-04-08, 06:51:
Thermalwrong wrote on 2023-04-08, 01:48:

From the resistor band colours it looks like 2.7 ohms

Thanks, I've got the PCB made to order and am about to try and build this card, have no prior knowledge of circuit design, it's a challenge.

It's good practise 😀 I put together a Gameblaster clone card from chipkin.ru (SoundTronix 1099) a few years back and it was a similarly harrowing experience, but worth it. That had a similar 'guide' to construction with mostly just silkscreen markings on the PCB to know what goes where.
Just checked the Bill of Materials on Mouser and it does say 2.71 ohms there so that should be it.

Reply 17 of 17, by zwrr

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I just finished assembling this sound card and the same author's SAM2695 MIDI module.

after testing, the sound card and MIDI module work fine. It was a pleasant experience.

The test environment is:
Pentium 166
Asus T2P4 ver 3.10
16MB x2
S3 Virge/DX
ES1868 ISA 8bit + SAM2695 MIDI module

Use UNISOUND to configure sound card in DOS 6.22 system.

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Cyrix 486DLC-40, 386-VC-H, 16MB, GD5422, ES1868F


Intel 486DX4-100EW, VI15G, 16MB, WD90C33, ES1868F


AMD5x86-133, HIPPO-15, 32MB, S3 Vison 964, ES1868F


K6-3+ 500, T2P4, 128MB, Millennium II, Voodoo 2 12MB, SoundBlaster AWE32