Vintage HMC HM82C11C 8-Bit ISA Parallel (LPT) Printer Interface CardPremium Low-Hour Condition — Clean C3 Logic Revision — Selectable Address & IRQ
Up for sale is an exceptionally clean, beautifully preserved vintage HMC 8-Bit ISA Parallel Port Expansion Card (Chipset Model: HM82C11C). Manufactured in late 1992 during the golden era of personal computing architecture, this card provides a single external DB25 female parallel interface connection point to link legacy hardware systems out to classic Centronics printers, external storage drives, or legacy hardware dongles.
Because this is an 8-bit legacy card, it features universal cross-compatibility across all classic personal computing generations—sliding natively into early 8-bit IBM PC/XT slots or full-length 16-bit ISA lanes on 286, 386, 486, and early Pentium systems.
🕹️ Hardware Adjustments & Jumper Matrix Optimization:
Selectable Port Addresses: Outfitted with an on-board "JP1" jumper matrix allowing you to mechanically route base addresses to 378h, 278h, or 3BCh to easily configure the card as LPT1 or LPT2 without system conflicts.
Dedicated Interrupt Routing: Features physical jumper headers to lock hardware requests directly to IRQ7 or IRQ5, allowing you to prevent hardware interrupt conflicts with legacy sound cards (such as Sound Blaster modules) inside pure DOS environments.
Item Hardware Specifications:
Chipset Controller: HMC (Hualon Microelectronics Corporation) HM82C11C
Bus Interface: 8-Bit ISA (PC/XT & AT Form Matrix)
External Connection Interface: 1 x 25-Pin Female DB25 LPT Parallel Port
Onboard Logic Array: Integrated HD74LS245R and HD74LS38P bus transceivers for signal stability
Date Code: 9246A (46th Week of 1992 Fabrication)
Condition & Protective Packaging Standards:
Superb Cosmetic Shape: This card was cleanly extracted from a low-hour environment, displays pristine green circuit tracking surfaces, perfectly flat logic structures, and mirror-bright gold slot connection fingers with zero insertion wear.
Worry-Free Packaging: The card will be securely enclosed inside a professional anti-static electronic component shielding bag, wrapped carefully within protective layers of bubble wrap padding, and shipped inside a sturdy cardboard container box to guarantee a safe, static-free delivery directly to your workbench.
Shipping Cost: Free shipping is included with this purchase.
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