---
title: "Byte-Back Printer Interface"
type: "article"
slug: "byte-back-printer-interface"
url: "http://localhost/article/byte-back-printer-interface/"
markdown_url: "http://localhost/article/byte-back-printer-interface.md"
published_at: "2024-01-28T17:33:18+00:00"
modified_at: "2025-10-17T22:57:39+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Al Rapp of Blowing Rock, NC writes: I am using the RS-232 board in my Byte-Back modem and Byte-Back's printer driver program to drive my Star DP8480 serial printer. I can copy the whole screen by using USR 8347 at line 3020 of PRO/FILE but I can't select lines to be printed. You must alter…"
category:
  - name: "Pro/File Updates"
    slug: "pro-file-updates"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/pro-file-updates/"
post_tag:
  - name: "1984"
    slug: "year-1984"
    taxonomy: "post_tag"
    url: "http://localhost/tag/year-1984/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
indiv:
  - name: "Alfred Rapp"
    slug: "al-rapp"
    taxonomy: "indiv"
    url: "http://localhost/indiv/al-rapp/"
publication_r:
  id: 39136
  title: "Pro/File Updates"
  type: "periodical"
  url: "http://localhost/periodical/pro-file-updates/"
authors: "Alfred Rapp"
volume: "1"
issue: "1"
issues_articles:
  - id: 52729
    title: "Pro/file Updates v1 n1"
    type: "issue"
    url: "http://localhost/issue/pro-file-updates-v1-n1/"
pages: "2"
pubdate: "January 1984"
product_reviews:
  - id: 14729
    title: "ZX Pro/File"
    type: "product"
    url: "http://localhost/product/zx-pro-file-2/"
archive_link: false
---

# Byte-Back Printer Interface

[Al Rapp](http://localhost/indiv/al-rapp/) of Blowing Rock, NC writes: I am using the RS-232 board in my Byte-Back modem and Byte-Back’s printer driver program to drive my Star DP8480 serial printer. I can copy the whole screen by using USR 8347 at line 3020 of PRO/FILE but I can’t select lines to be printed.

You must alter PRO/FILE’s printer codes:

```
POKE 16674,6 
POKE 16675,0 
POKE 16676,205 
POKE 16677,93 
POKE 16678,32 
POKE 16679,42 
POKE 16680,14 
POKE 16681,64 
POKE 16682,195 
POKE 16683,126 
POKE 16684,32
```

Also, change BASIC lines so they read:

```
3010 POKE 16675,C2 
3020 RAND USR 16674 
3036 GOSUB 3500
```

Finally, add these BASIC lines:

```
3500 CLS
3510 PRINT
3520 RAND USR 8351 
3521 RETURN
```

This routine works when Byte-Back’s printer driver is located at address 8347 for LCOPY.