diff options
| author | Alexey 'Cluster' Avdyukhin <clusterrr@clusterrr.com> | 2020-09-21 00:12:41 +0300 |
|---|---|---|
| committer | Alexey 'Cluster' Avdyukhin <clusterrr@clusterrr.com> | 2020-09-21 00:12:41 +0300 |
| commit | 6d1a15a8ad99725f5e3f9d95b30df53d6a434062 (patch) | |
| tree | 69c9ad7bbd5761315ec23339cf5facedc300a60f /flash.asm | |
| parent | 65f7185ad6e99eab403e9111b12e4c34db54136b (diff) | |
More build info
Diffstat (limited to 'flash.asm')
| -rw-r--r-- | flash.asm | 16 |
1 files changed, 10 insertions, 6 deletions
@@ -3,13 +3,13 @@ FLASH_TYPE .rs 1 ; flash memory type flash_detect: - jsr enable_flash_write - lda #$F0 - sta $8000 lda #0 sta <FLASH_TYPE + jsr enable_flash_write + ; enter flash CFI mode lda #$98 - sta $8AAA + sta $80AA + ; check for CFI signature lda $8020 cmp #'Q' bne .end @@ -17,11 +17,13 @@ flash_detect: cmp #'R' bne .end lda $8024 - cmp #'I' + cmp #'Y' bne .end + ; if signature is ok read flash size lda $804E sta <FLASH_TYPE .end: + ; exit CFI mode lda #$F0 sta $8000 jsr disable_flash_write @@ -65,7 +67,7 @@ write_flash: lda #$55 sta $8555 ; write_prg_flash_command(0x0555, 0x55); lda #$A0 - sta $8AAA ; write_prg_flash_command(0x0AAA, 0xA0); + sta $8AAA ; write_prg_flash_command(0x0AAA, 0xA0); lda [COPY_SOURCE_ADDR], y sta [COPY_DEST_ADDR], y .check1: @@ -103,6 +105,8 @@ read_flash: rts flash_set_superbank: + lda #0 + jsr select_prg_bank ldx LOADER_GAME_SAVE_SUPERBANK inx lda #$FF |