• Rock 4SE – prisvärd enkortsdator med oväntad mjukvaruskatt

    I en tidigare artikel presenterades Rock 4SE – en kraftfull enkortsdator som kan införskaffas för så lite som 200 kronor. Det konstanterades att tillverkaren stöd för detta utvecklingskort var som bortblåst.

    Det bör påpekas att detta inte är en minidator i klassisk bemärkelse; en PDP-11 kvalificerar sig som det, men Rock 4SE hör snarare till kategorin moderna, ARM-baserade utvecklingskort.

    Tack vare ett tips från en uppmärksam läsare har vi hittat en riktig guldgruva för alla som arbetar med sådana enheter. Webbplatsen sd-card-images.johang.se erbjuder ett omfattande bibliotek av färdiga systemavbilder – inte bara för Rock 4SE, utan även för andra modeller av utvecklingskort och även telefoner, inklusive sådana som tillverkarna själva verkar ha lämnat bakom sig.

    Länk till image för Rock 4SE https://sd-card-images.johang.se/boards/rock_pi_4se.html

    Jämförelse: Rock 4SE vs PDP-11

    CPU:
    PDP-11: 16-bit, ~5–18 MHz
    Rock 4SE: 64-bit ARM Cortex-A72, 4×1.8 GHz

    RAM:
    PDP-11: 128 KB – 4 MB
    Rock 4SE: 4 GB eller 8 GB LPDDR4

    Lagring:
    PDP-11: Magnetband, disketter (MB)
    Rock 4SE: SD-kort, eMMC, NVMe (GB–TB)

    Beräkningskapacitet:
    PDP-11: Tiotals till hundratals kIPS
    Rock 4SE: ~10.000 MIPS (≈ 10.000.000 kIPS)

    Prestandaskillnad:
    Rock 4SE är cirka 100.000–1.000.000 gånger snabbare än PDP-11

    Övrigt:
    Rock 4SE kan köra Linux, hantera 4K-video och moderna applikationer.
    PDP-11 var banbrytande på 1970-talet men är idag museal.
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Rock 4SE – prisvärd enkortsdator med oväntad mjukvaruskatt

I en tidigare artikel presenterades Rock 4SE – en kraftfull enkortsdator som kan införskaffas för så lite som 200 kronor. Det konstanterades att tillverkaren stöd för detta utvecklingskort var som bortblåst.

Det bör påpekas att detta inte är en minidator i klassisk bemärkelse; en PDP-11 kvalificerar sig som det, men Rock 4SE hör snarare till kategorin moderna, ARM-baserade utvecklingskort.

Tack vare ett tips från en uppmärksam läsare har vi hittat en riktig guldgruva för alla som arbetar med sådana enheter. Webbplatsen sd-card-images.johang.se erbjuder ett omfattande bibliotek av färdiga systemavbilder – inte bara för Rock 4SE, utan även för andra modeller av utvecklingskort och även telefoner, inklusive sådana som tillverkarna själva verkar ha lämnat bakom sig.

Länk till image för Rock 4SE https://sd-card-images.johang.se/boards/rock_pi_4se.html

Jämförelse: Rock 4SE vs PDP-11

CPU:
PDP-11: 16-bit, ~5–18 MHz
Rock 4SE: 64-bit ARM Cortex-A72, 4×1.8 GHz

RAM:
PDP-11: 128 KB – 4 MB
Rock 4SE: 4 GB eller 8 GB LPDDR4

Lagring:
PDP-11: Magnetband, disketter (MB)
Rock 4SE: SD-kort, eMMC, NVMe (GB–TB)

Beräkningskapacitet:
PDP-11: Tiotals till hundratals kIPS
Rock 4SE: ~10.000 MIPS (≈ 10.000.000 kIPS)

Prestandaskillnad:
Rock 4SE är cirka 100.000–1.000.000 gånger snabbare än PDP-11

Övrigt:
Rock 4SE kan köra Linux, hantera 4K-video och moderna applikationer.
PDP-11 var banbrytande på 1970-talet men är idag museal.